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Title:
List of publications
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v. : ill. ; 21 cm.
Language:
English
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Forest Products Laboratory (U.S.)
Publisher:
The Laboratory
Place of Publication:
Madison, Wis
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semiannual
regular

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Forest products -- Bibliography   ( lcsh )
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federal government publication   ( marcgt )
bibliography   ( marcgt )
periodical   ( marcgt )

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Also issued online.
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U.S. Forest Products Laboratory.
Dates or Sequential Designation:
Ceased with: Jan. 1/June 30, 1967.
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Description based on: July 1/Dec. 31, 1928; title from caption.

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University of Florida
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oclc - 04893623
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AA00013758:00004

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LIST

OF

PUBLICATIONS


July 1 to December 31,


1966


FOREST PRODUCTS LABORATORY
FOREST SERVICE
U S DEPARTMENT OF AGRICULTURE
MADISON, WISCONSIN 53705


I I IIII







UNIV. OF FL Li.





U.S. DEPOrMTO RY
L .- _ina~dL. -































CONTENTS


Page


Building Materials and Construction


Methods. ... ... .

Fire Performance .

Fungus and Insect Research .

Glues, Glued Stock, Plywood,

and Veneer. ..

Laminated Structural Members

Lumber Grading ...

Mechanical Properties. .

Milling and Utilization ..

Packaging. ...

Paints and Finishes. ..

Physical Properties ..

Plastics. .

Sandwich ..... ... ...

Seasoning .........

Wood Chemistry and Derived

Products .....

Wood Fiber Products. .


......
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B 0
Q







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. S U U

. S

. S .

. U S .

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a 0 a


* 9 .


* S S 0

* S S U S

* S S S

* S S 5 5



* S S S S

* S S S S


Wood Structure and Growth Conditions.

Miscellaneous. .. ..


* .

* S











LIST OF PUBLICATIONS


JULY 1 TO DECEMBER 31, 1966


In this semiannual list of publications, items
marked with a number are available free at the
Forest Products Laboratory while the supply
lasts. To request publications simply circle the
appropriate number on the back cover of this
list, detach, and mail to the Laboratory. Blanket
requests for publications cannot be filled.
Publications marked with an asterisk (*) are
not available at the Forest Products Laboratory.
They may, however, be consulted at most public
and college libraries. Reports of slight interest
to the layman are listed under the caption "Highly
Technical."



BUILDING MATERIALS
AND CONSTRUCTION METHODS


1. Moisture cycling of trussed rafter joints, by
Thomas Lee Wilkinson. U.S. Forest Serv.
Res. Paper FPL 67, 40 pp., Nov. 1966.
By means of accelerated tests under
service conditions, the effects of initial
moisture content and moisture cycling
(under load) on strength and rigidity of
nailed wood and plywood joints, glued joints,
and nailed, barbed, and toothed metal-plate
connector type joints were determined.










FIRE PERFORMANCE


* Fire-retardant-treated wood, by
Herbert W. Eickner. J. of Materials 1(3):
625-643, Sept. 1966.
Acceptance and use, of fire-retardant-
treated wood as a building material is
increasing. Information is presented on the
chemicals and treating processes used,
theories of fire-retardant action, perform-
ance of fire-retardant-treated wood in fire
tests and actual fires, and effect of wood
treatment on related properties.

2. Review of information related to the charring
rate of wood, by E. L. Schaffer. U.S. Forest
Serv. Res. Note FPL-0145, 59 pp., Nov. 1966.
Information is summarized on the mecha-
nism of thermal degradation of wood, prop-
erties affecting rate of char, models and
measured rates of char development, and
heat liberation during combustion of wood.
Related studies onthe mechanism of thermal
degradation of plastic polymers and analyt-
ical degradation models are also
summarized.


FUNGUS AND INSECT RESEARCH



* Deterioration rates of willow and cottonwood
during storage in Georgia, by Paul J. Bois
and W. E. Eslyn. Forest Prod. J. 16(11):
17-22, Nov. 1966.


*Not available at FPL.








After approximately a year's storage,
the maximum specific gravity loss in willow
bolts was about 5 percent and in cottonwood
bolts 8 percent. There was little change in
fiber classifications of the pulps.

* Natural resistance of wood to microbial
deterioration, by T. C. Scheffer and
E. B. Cowling. Ann. Rev. of Phytopathology
4: 147-170, 1966.
A comprehensive summary principally of
what is known about the variation in natural
decay resistance of woods, between species,
within individual species, and within indi-
vidual trees. Associated factors and the
extractive chemicals responsible for decay
resistance are described.

3. Relation of visual estimates of decay to
specific gravity loss in stored cottonwood
and willow, by Wallace E. Eslyn. U.S.
Forest Serv. Res. Note FPL-0143, 5 pp.,
Sept. 1966.
Values for visual estimates of decay and
actual losses in specific gravity in stored
cottonwood and willow bolts were plotted
and compared according to species of host
and type of decay to determine the extent of
correlation between the two measures for
decay.

* Wood-decaying ascomycetes and fungi imper-
fecti, by C. G. Duncan and W. E. Eslyn.
Mycologia 58(4): 642-645, July, Aug. 1966.
An account of a taxonomic study of fungi
found at the Forest Products Laboratory to
be capable of the soft-rot type of decay under
pure-culture conditions.









GLUES, GLUED STOCK,


PLYWOOD, AND VENEER




* Effects of horizontal roller-bar openings on
quality of rotary-cut southern pine and
yellow-poplar veneer, by John F. Lutz and
Robert A. Patzer. Forest Prod. J. 16(10):
15-25, Oct. 1966.
Effects of various horizontal roller-bar
openings were evaluated by rotary-cutting
veneer from clear southern pine and yellow-
poplar. Optimum roller-bar openings in
cutting yellow-poplar were found to be
smaller than those for cutting southern
pine. High-speed movies showed splitting
ahead of the knife was more common when
cutting southern pine than when cutting
yellow-poplar.

* Some effects of bacterial action on rotary-
cut southern pine veneer, by J. F. Lutz,
C. G. Duncan, and T. C. Scheffer. Forest
Prod. J. 16(8): 23-28, Aug. 1966.
Small clear southern pine disks were
stored for 6 months in warm water to pro-
mote the development of bacteria. They
were then rotary-cut into veneer, as were
matched disks that had been stored at 35"F.
The disks stored at 35" F. lost less water
in cutting than the disks stored in warm
water. Loads developed on the roller bar
were significantly higher when cutting the
disks stored at 350 F.


*Not available at FPL.








* Some factors affecting southern pine veneer
and plywood quality, by Robert L. Youngs.
Plywood (India) 11(3): 128-134, July 1966.
Reviews past and current research at
the Forest Products Laboratory on cutting,
drying, and gluing southern pine veneer and
also describes exposure tests on overlaid
pine lumber and plywood. Work done at
other research laboratories that pertains
to southern pine plywood is also discussed.


LAMINATED STRUCTURAL MEMBERS


4. Flexural behavior of large glued-laminated
beams, by Billy Bohannan. U.S. Forest
Serv. Res. Paper FPL 72, 17pp., Dec. 1966.
Six glued-laminated Douglas-fir beams,
9 by 31-1/2 inches by 50 feet, were
evaluated--three fabricated from clear
straight-grained lumber and three from
structural lumber. Results were used to
check published relationships of effect of
size and of knots on bending strength.


LUMBER GRADING


* Machine grading--Theory and practice, by
H. C. Hilbrand and D. G. Miller. Forest
Prod. J. Pt. 1-16(11): 28-34, Nov. 1966;
Pt. 2-16(12): 36-40, Dec. 1966.
These papers are devoted to a better
understanding of the fundamental concepts
upon which machine-grading criteria are
founded. Included is a discussion of present
5









stress-grading machines, lumber grades,
commercial practices, production, certifi-
cation requirements, efficiency, and a com-
parison of visual and machine-grading
systems.

5. Properties of southern pine in relation to the
strength grading of dimension lumber, by
D. V. Doyle and L. J. Markwardt. U.S.
Forest Serv. Res. Paper FPL 64, 64 pp.,
July 1966.
The study affords an appraisal of the
strength of structural grades of southern
pine of different sizes in relation to allow-
able working stresses; provides a means
of evaluating the efficiency of visual grad-
ing in bending and compression; and includes
data relating to an appraisal of machine
grading on a stiffness evaluation.



MECHANICAL PROPERTIES



* Anisotropy in wood, by R. L. Ethington and
H. C. Hilbrand. ASTM Spec. Tech. Pub.
No. 405, pp. 21-38, 1966.
Wood is an orthotropic, cellulosic, semi-
crystalline, cellular material. Woody tissue
is oriented such that mechanical properties
are higher along the bole of the tree than
across the bole. Mechanical properties
exhibit strong orientation effects and are
complicated by the addition of growth
irregularities.


*


*Not available at FPL.










6. Physical and mechanical properties of black-
butt eucalyptus grown in Hawaii, by
C. C. Gerhards. U.S. Forest Serv. Res.
Paper FPL 65, 8 pp., Aug. 1966.
Presents the physical and mechanical
properties of the wood species blackbutt
eucalyptus grown in Hawaii. Based on the
property evaluations in this study, the wood
is heavy, very strong in bending and com-
pression, hard and exceedingly stiff, and
its shrinkage is very large.


MILLING AND UTILIZATION

7. Knee position recorder for sawmill carriage
headblocks, by F. B. Malcolm and
L. H. Reineke. U.S. Forest Serv. Res.
Note FPL-0139, 14 pp., Aug. 1966.
A research instrument is described that
automatically records the exact amount the
knees of sawmill carriage headblocks move
in making rapid successive sets during the
sawing operation.

* Volume loss from inaccurate sawing, by
L. H. Reineke. South. Lbrman. 213(2646):
30-34. July 15, 1966.
The characteristics of losses in lumber
volume yields as related to inaccurate saw-
ing are discussed, where theyo6cur andhow
losses may be recovered.


PACKAGING


* How dead load, downward creep influence
corrugated box design, by R. C. Moody and
7










K. E. Skidmore. Package Engineering 11(8):
75-81, Aug. 1966.
Results of simulated stacking tests on !
A-flute corrugated fiberboard containers Ii
indicated that they will support loads longer
than would be predicted using B-flute data.
Attempts were made to relate creep char-
acteristics of containers under load totheir
stacking life. Generally, containers with
lower creep rates supported loads for
longer periods of time.

* Latest developments in testing corrugated
boxes in the United States, by
Keith Q. Kellicutt, presented at the 9th
Congress of the European Federation of
Manufacturers of Corrugated Cardboard,
Apr. 1966. Expose No. 3, 47 pp.
Methods of evaluating paperboard, cor-
rugated fiberboard, and corrugated fiber-
board shipping containers are discussed.
Means are shown for developing more
scientific design criteria on: physicalprop-
erties of paperboard, corrugated board as
a structural material, and evaluation of
boxes to determine if the inherent strength
of the components has been fully utilized.

* Slip pads, vertical alignment increase stack-
ing strength 65%, by J. W. Koning, Jr., and
R. C. Moody. Boxboard Containers 85(888):
56-59, Nov. 1966.
Compressive strength of vertically alined,
palletized corrugated-fiberboard containers
with slip pads placed between layers was


*Not available at FPL..









approximately 65 percent higher than simi-
lar palletized containers using an interlock-
ing arrangement without slip pads. Limited
handling evaluations indicated vertically
alined containers with slip pads were more
stable than palletized containers placed in
an interlocking arrangement.

* Some observations of plywood pallets in use,
by T. B. Heebink. Plywood (India) 11(3):
135-137, July 1966.
Surveys were conducted of plywood pallets
in use in 21 industrial plants at Midwest
and West Coast locations. No particular
problems with plywood pallets were found
that cannot be easily solved. It would be
helpful if requirements for deck thickness,
especially for post-type pallets, were
developed.


PAINTS AND FINISHES


8. Cross-grain cracking of oil-base house
paints, by Forest Products Laboratory. U.S.
Forest Serv. Res. Note FPL-0129, 2 pp.,
July 1966.
The failure of exterior house paint by
cross-grain cracking is described. Sugges-
tions on preventing this type of failure
also are given.

9. Discoloration of house paint by blue stain, by
Forest Products Laboratory. U.S. Forest
Serv. Res. Note FPL-0131, 2 pp., July 1966.
Describes discoloration of paint by blue
stain and how it can be prevented.










10. Discoloration of house paints by water-
soluble extractives in western redcedar
and redwood, by Forest Products Labora-
tory. U.S. Forest Serv. Res. Note FPL-0132,
4 pp., July 1966.
Describes discoloration of exterior house
paints by outside water entering through
thin coats of porous paint and by inside
water entering from the back of siding.
Recommendations for preventing discolora-
tion are given.

11. Finishing exterior plywood, by Forest Prod-
ucts Laboratory. U.S. Forest Serv. Res.
Note FPL-0133, 3 pp., July 1966.
Recommendations for the painting and
staining of exterior plywood are presented.
Also describes the improved performance
through use of paper overlaid plywood as a
painting substrate.

12. Intercoat peeling of house paints, by Forest
Products Laboratory. U.S. Forest Serv.
Res. Note FPL-0127, 2 pp., July 1966.
Describes the causes and cures of failure
of exterior house paint by intercoatpeeling.

13. Mildew on house paints, by Forest Products
Laboratory. U.S. Forest Serv. Res. Note
FPL-0128, 2 pp., July 1966.
The causes and cures of mildew on
exterior house paint are described.

14. Painting outside wood surfaces, by Forest
Products Laboratory. U.S. Forest Serv.
Res. Note FPL-0123, 3 pp., June 1966.


10 *Not available at FPL.










Includes a few simple tried and tested
procedures for the average homeowner
wishing to paint the outside of his house
and other buildings.

| Steps before painting, by Glenn D. Barquest
and John M. Black. Hoard's Dairyman
S111(13): 804, July 10, 1966.
Gives recommendations for preparing
old surfaces for repainting. Advises on the
use of water-repellent preservative treat-
ment of wood preparatory to painting and
suggestions on the use of primer paint
which is free of zinc oxide pigment.

15. Temperature blistering of house paints, by
Forest Products Laboratory. U.S. Forest
Serv. Res. Note FPL-0126, 2 pp., July 1966.
The causes and cures of failure of exte-
rior house paint by temperature blistering
are described.

16. Weathering of wood, by Forest Products
Laboratory. U.S. Forest Serv. Res. Note
FPL-0135, 4 pp., July 1966.
Summarizes the photochemical, physical,
and biological aspects of how wood weathers.
Recommendations also are included on how
to finish exterior wood naturally with a
water-repellent preservative.


PHYSICAL PROPERTIES



17. Effects of wood preservatives on electric
moisture-meter readings, by W. L. James.
U.S. Forest Serv. Res. Note FPL-0106,


~1~~1 __










20 pp., Aug. 1966.
Describes the effects that some commonly
used wood preservatives have on readings
of electric moisture meters, when the
meters are used to determine moisture con-
tent of preservatively treated wood.

Highly Technical

18. Predicting specific gravity of plantation-
grown red pine, by R. R. Maeglin. U.S.
Forest Sery. Res. Note FPL-0149, 14 pp.,
Dec. 1966.
Equations are established for predicting
tree specific gravity from the specific
gravity of increment cores and from other
tree characters of Wisconsin plantation-
grown red pine (Pinus resinosa Ait.). Rela-
tionship of height to specific gravity is
shown, and comparisons are made withdata
from naturally grown red pine of Maine.


PLASTICS


19. Forest Products Laboratory list of publica-
tions on modified woods, paper-base lami-
nates, and reinforced plastic laminates, by
Forest Products Laboratory. 14 pp., Dec.
1966.
Contents indicated by title.

SANDWICH

Anisotropic sandwich constructions, by
E. W. Kuenzi. ASTM Spec. Tech. Pub.
No. 405, pp. 14-20, 1966.


*Not available at FPL.











Parameters are presented for determin-
ing characteristics of anisotropic sandwich
constructions, particularly for orthotropic
facings and cores. Described are effects of
utilizing dissimilar facings, cores that have
anisotropic features, and effects of layers
having low shear moduli. Effects of aniso-
tropy in arriving at minimum weight struc-
ture are discussed.

20. Forest Products Laboratory list of publica-
tions on sandwich construction, by Forest
Products Laboratory. 23 pp., Dec. 1966.
Contents indicated by title.



Highly Technical

21. Edgewise compressive properties of titanium
and nickel-base sandwich constructions at
elevated temperatures, by Paul M. Jenkin-
son. U.S. Forest Serv. Res. Paper FPL 68,
28 pp., Nov. 1966.
Presents results of research conducted
to evaluate the edgewise compressive prop-
erties of resistance-welded titanium alloy
and nickel-base alloy sandwich construc-
tions at elevated temperatures to 9000 F.




SEASONING



22. Dimensional changes in kiln-dried softwood
lumber after surfacing and during storage,
by G. L. Comstock. U.S. Forest Serv. Res.
Note FPL-0144, 24 pp., Sept. 1966.


..ft










Dimensional changes caused by surfacing
and storing Douglas-fir and loblolly pine
after rapid kiln drying were measured to
determine whether shrinkage follows rapid
kiln drying of dimension lumber. The
observed changes were so small that they
would be of no practical importance.

23. News and views of this kiln drying business:
Presurfacing green oak lumber to reduce
surface checking, by R. C. Rietz and
J. A. Jenson. U.S. Forest Serv. Res. Note
FPL-0146, 2 pp., Sept. 1966.
Research indicated that presurfacing
green northern red oak before drying will
minimize surface checking, reduce honey-
comb, and produce a more uniformly dried
product in a shorter drying period.

24. A probe for accurate determination of mois-
ture content of wood products in use, by
John E. Duff. U.S. Forest Serv. Res. Note
FPL-0142, 13 pp., Aug. 1966.
A probe for determining moisture content
of a wood product in use has been developed
for use in research. The probe can be used
at high and low moisture conditions, and
for determining average atmospheric mois-
ture conditions.


WOOD CHEMISTRY AND DERIVED PRODUCTS

Highly Technical

* Delignification of aspen wood with acidified
aqueous solutions of sulfolane, by


*Not available at FPL.









Edward L. Springer and Lawrence L. Zoch.
Svensk Papperstid. 69(16): 513-516. 1966.
Acidified aqueous solutions of sulfolane
(tetramethylene sulfone) were found to be
highly effective in delignification of finely
divided aspen wood. High sulfolane concen-
trations and reaction temperatures were
most effective in lignin removal. Sulfuric
acid concentrations above 0.200M\ caused
redeposition of ligninlike materials.


* The glycoflavonoid pigments of Vitex
lucens wood, by Margaret K. Seikel,
Juliana H. S. Chow, and Linda Feldman.
Phytochemistry 5: 439-455. 1966.
Vitex lucens wood contains many
C-glycosylflavonoid compounds. These unu-
sual flavonoids have been found in other
Leguminosae. Known compounds identified
included vitexin, isovitexin, orientin, and
iso-orientin; their xylosides also occurred.
In addition, the first examples of di-C-
glycosylflavonoids were discovered. One
was isolated and analyzed; seven others
were partially characterized.


* Interaction of wood with polymeric materials.
II. Penetration versus molecular size, by
Harold Tarkow, W. C. Feist, and
C. F. Southerland. Forest Prod. J. 16(10):
61-65, Oct. 1966.
The relationship between molecular size
and ability to penetrate water-swollen wood
substance were determined, using carefully
characterized polyethylene glycols. The
largest penetrable glycol had a molecular
weight of 3000 and a computed radius of
15









gyration of about 20 angstroms. This has
implications for delignification and biolog-
ical utilization.

25. Light-induced free radicals in wood, by
Martin A. Kalnins, Cornelius Steelink, and
Harold Tarkow. U.S. Forest Serv. Res.
Paper FPL 58, 8 pp., Oct. 1966.
Wood specimens were examined by
electron-spin resonance spectroscopy
before and after exposure to light, and
evidence of light-induced free radicals was
obtained. Some indication of their stability
in various atmospheres was also observed.

26. Lignin production and detection in wood, by
John M. Harkin. U.S. Forest Serv. Res.
Note FPL-0148, 2 pp., Nov. 1966.
A simple explanation of what is now known
about the way in which lignin is formed in
living plants and how lignin can be detected
by staining in plant materials.

Relationships between some uronic acids
and their decarboxylation products, by
M.S. Feather and J. F. Harris. J. Org.
Chem. 31: 4018. 1966.
The major end products of the decar-
boxylation of hexuronic acids are
2-furaldehyde, 5-formyl-2-furoic acid and
reductic acid. Using various hexuronic
14
acids-C structural relationships between
products and parent acids were studied.


*Not available at FPL.









WOOD FIBER PRODUCTS


* Outside storage of pulpwood chips--a review
and bibliography, by George J. Hajny. Tappi
49(10): 97A-105A, Oct. 1966.
Reviews the literature on all phases of
pulpwood chip storage. Advantages of out-
side chip storage, pile construction and
chip reclamation, conditions within the piles,
decay due to micro-organisms, effects of
storage on pulp yield and quality, and
changes in wood components and extractives
are discussed.



Highly Technical

* Fiber characteristics and paper quality from
southern pine, by G. H. Chidester. Tech.
Papers of the Amer. Pulpwood Assoc.,
pp. 22-24, July 1966.
Discusses certain properties of southern
pine pulpwood and pulps, the influence upon
paper quality of density, proportion of
summerwood-springwood, fiber wall thick-
ness, and other characteristics.

27. Suitability of Appalachian woods for sanitary
tissue and toweling, by Forest Products
Laboratory. U.S. Forest Serv. Res. Paper
FPL 66, 20 pp., Oct. 1966.
Mixtures of Appalachian hardwood and
softwood kraft pulps in the lower yield
range and bleached to the moderate bright-
ness of 83 to 85 percent were found suitable
for the manufacture of sanitary tissues and
toweling of commercial quality.


i i l









WOOD STRUCTURE


AND GROWTH CONDITIONS


Highly Technical

* Another view of the ultrastructure of
Cucurbita phloem, by R. F. Evert,
L. Murmanis, and I. B. Sachs. Annals of
Botany 30: 120, 1966.
This research deals with a detailed
ontogentic study of the primary phloem of
Cucurbita maxima D. using the electron
microscope.

Aspects of sieve element ultrastructure in
Primula obconica, by S. R. Tamulevich
and R. F. Evert. Planta., Berlin, Germany
69: 319-337, 1966.
The mature sieve element is lined with a
parietal layer of cytoplasm. A membrane
apparently separates the cytoplasmic com-
ponents from a large central cavity which
contains slime tubules. These tubules nor-
mally form strands which run the length of
the cell and traverse consecutive cells
through the sieve-plate pores. Developmen-
tal aspects are discussed.

The effects of elevated temperature on cer-
tain wood cells, by F. P. Kollmann and
I. B. Sachs. Wood Science & Technology
1(1): S14/25, 1966-7.
A preliminary investigation utilizing the
electron microscope to view and record
changes that may be observed in certain
woods after being subjected to high
temperature.


* Not available at FPL.










* Heartwood stain in red oak, by I. B. Sachs,
J. C. Ward, and E. H. Bulgrin. Holz als
Roh- und Werkstoff 10: 489-497. Oct. 1966.
Describes the appearance, properties,
and ultrastructure of red oak heartwood
containing dark discolorations. Thepossible
cause and origin of discoloration are dis-
cussed, although the etiology of the stain is
not explicit. The heartwood stain moves
from ray parenchyma to adjoining vessels,
fibers, and tracheids by the pit membranes
and plasmodesmata.

* Longitudinal shrinkage pattern in eastern
white pine stems, by A. N. Foulger. Forest
Prod. J. 16(12): 45-47, Dec. 1966.
Individual ring samples at 12 heights in
stem were collected from three 52-year-
old eastern white pines. Longitudinal shrink-
age decreased rapidly to 10th ringfrompith,
with only slight diminution thereafter. Ring
from pith, percentage of latewood, and
specific gravity were associated signifi-
cantly with longitudinal shrinkage. Speci-
men expansion was not related to position
in stem.

* Research on cellulose morphology, by
J. D. Sullivan and I. B. Sachs. Forest
Prod. J. 16(9): 83-86, Sept. 1966.
Delves into the question of diameter
variation of elementary fibrils obtained
from natural sources and records evidence
of a gradient in diameter of the elementary
fibrils in certain wood species.

* Some aspects of sieve cell ultrastructure in
Pinus strobus, by L. Murmanis and
R. F. Evert. Amer. J. Bot. 53(10): 1065-
1078. Nov.-Dec. 1966. 11


1 ~_ ~~_












Characteristic structures of immature sieve
cells are slime bodies enveloped by a membrane.
During differentiation slime bodies disperse and
slime strands traverse mature sieve cells.

MISCELLANEOUS

28. FPL 1965, Annual report of research at the
Forest Products Laboratory.

Programing for lumber yield, by G. H. Englerth
and D. E. Dunmire, Forest Prod. J. 16(9): 67-69,
Sept. 1966.
Describes the use of the computer to aid man-
agement in determining maximum yield from
hard maple lumber. The computer prescribed
how to cut each board for maximum yield and
located saw cuts.

Research objectives for the nondestructive evalu-
ation of wood and wood products, by
Robert L. Ethington. Symposium on nondestruc-
tive testing of wood, 2d, Spokane, 1965. Pro-
ceedings, pp. 519-527.
Specific objectives are the development of a
basis on which to compare competitive grading
methods, the search for additional nondestructive
parameters, and several problems not yet solved
for existing flexure machine gradingtechniques.

Russia's wood industry to benefit from new inland
waterways, by Dimitri Pronin. Forest Prod. J.
16(9): 116-117, Sept. 1966.
The major problem facing the Soviet wood
industry is that of wood transportation from heav-
ily forested regions. To remedy this situation
the Government is concentrating on improvement
of existing waterways and building new ones.







20 Not available at FPL.
GPO 801-444-2






U.S. DEPARTMENT OF AGRICULTURE
Forest Service
Forest Products Laboratory Place
Madison, Wisconsin 53705 Postage
Here
Official Business









Information and Publication Services

U.S. Forest Products Laboratory

Madison, Wisconsin 53705


U.S.A.








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