American Association for the Advancement

of Science, Section G.

R. A. HARPER, Columbia University,
New York City.

B. E. LIVINGSTON, Johns Hopkins Univer-
sity, Baltimore, Maryland.

Botanical Society of America, General
Section.

H. A. GLEASON, New York Botanical
Garden, New York City.

*B. M. DAVIS, University of Michigan,
Ann Arbor, Michigan.

Botanical Society of America, Physiological Section.

OTIS F. CURTIS (Secretary of the Board), Cornell University, Ithaca, New York. B. M. DUGGAR, Missouri Botanical Garden, St. Louis, Missouri.

Botanical Society of America, Systematic Section.

MARSHALL A. HOWE, New York Botanical Garden, New York City.

J. H. BARNHART, New York Botanical Garden, New York City.

Botanical Society of America, Mycological Section.

C. H. KAUFFMAN, University of Michigan, Ann Arbor, Michigan.

BRUCE FINK, Miami University, Oxford, Ohio.

American Society of Naturalists.

H. H. BARTLETT, University of Michigan, Ann Arbor, Michigan.

J. A. HARRIS, Department of Genetics, Carnegie Institution of Washington, Cold Spring Harbor, L. I., New York. Ecological Society of America.

H. L. SHANTZ, U. S. Bureau of Plant Industry, Washington, D. C.

"FORREST SHREVE (Chairman of the Board), Desert Laboratory, Carnegie Institution, Tucson, Arizona.

Paleontological Society of America.

ARTHUR HOLLICK, 61 Wall Street, New
Brighton, New York.

E. W. BERRY, Johns Hopkins University,
Baltimore, Maryland.

American Society of Agronomy.

C. B. HUTCHISON, University of Cali-
fornia, Davis, California.

C. A. MOOERS, University of Tennessee,
Knoxville, Tennessee.

Society for Horticultural Science.

V. R. GARDNER, Michigan Agricultural
College, East Lansing, Michigan.

E. J. KRAUS, University of Wisconsin,
Madison, Wisconsin.

American Phytopathological Society.
L. R. JONES, University of Wisconsin,
Madison, Wisconsin.

DONALD REDDICK, Cornell University,
Ithaca, New York.

Society of American Foresters.

RAPHAEL ZON, U. S. Forest Service, Washington, D. C.

J. S. ILLICK, Pennsylvania Department of Forestry, Harrisburg, Pennsylvania. American Conference of Pharmaceutical Faculties.

HEBER W. YOUNGKEN, Philadelphia Col

lege of Pharmacy and Science, Philadelphia, Pennsylvania.

HENRY KRAEMER, Mt. Clemens, Michigan.

Canadian Society of Technical Agriculturists.

W. P. THOMPSON, University of Saskatchewan, Saskatoon, Saskatchewan. B. T. Dickson, Macdonald College, Macdonald College, Quebec.

Royal Society of Canada.

W. A. ORTON, U. S. Bureau of Plant Industry, Washington, D. C.

F. E. LLOYD, McGill University, Montreal, Quebec.

J. H. FAULL, University of Toronto, Toronto, Ontario.

J. R. SCHRAMM, (ex-officio), National Reseach Council, Washington, D. C.

Agronomy. C. V. PIPER, U. S. Bureau of Plant Industry, Washington, D. C.Assistant Editor, MARY R. BURR, U. S. Bureau of Plant Industry, Washington, D. C.

Bibliography, Biography and History. CARROLL W. DODGE, Harvard University, Cambridge, Massachusetts.

Botanical Education. C. STUART GAGER, Brooklyn Botanic Garden, Brooklyn, New York.-Assistant Editor, ARTHUR H. GRAVES, Brooklyn Botanic Garden, Brooklyn, New York.

Cytology. GILBERT M. SMITH, University of Wisconsin, Madison, Wisconsin.Assistant Editor, GEO. S. BRYAN, University of Wisconsin, Madison, Wisconsin. Ecology and Plant Geography. H. C. COWLES, The University of Chicago, Chicago, Illinois.-Assistant Editor, GEO. D. FULLER, The University of Chicago, Chicago, Illinois.

Forest Botany and Forestry. Jos. S. ILLICK, Pennsylvania Department of Forestry, Harrisburg, Pennsylvania.

Genetics. ORLAND E. WHITE, Brooklyn Botanic Garden, Brooklyn, New York. Horticulture. J. H. GOURLEY, Ohio Agricultural Experiment Station, Wooster, Ohio.-Assistant Editor, H. E. KNOWLTON, West Virginia University, Morgantown, West Virginia.

Miscellaneous, Unclassified Publications. BURTON E. LIVINGSTON, The John Hopkins University, Baltimore, Maryland.Assistant Editor, SAM F. TRELEASE, The John Hopkins University, Baltimore, Maryland.

Morphology, Anatomy and Histology of Vascular Plants. E. W. SINNOTT, Con

Morphology and Taxonomy of Bryophytes. ALEXANDER W. EVANS, Yale University, New Haven, Connecticut.

Morphology and Taxonomy of Fungi, Lichens, Bacteria and Myxomycetes. H. M. FITZPATRICK, Cornell University, Ithaca, New York.

Paleobotany and Evolutionary History. EDWARD W. BERRY, The Johns Hopkins University, Baltimore, Maryland. Pathology. FREDERICK V. RAND, Bureau of Plant Industry, Washington, D. C.Assistant Editor, LILLIAN C. CASH, Bureau of Plant Industry, Washington, D. C. (For Nos. 1 and 2, G. H. Coons, Editor, C. W. Bennett, Assistant Editor, East Lansing, Michigan.)

Pharmaceutical Botany and Pharmacognosy. HEBER W. YOUNGKEN, Philadelphia College of Pharmacy and Science, Philadelphia, Pennsylvania.-Assistant Editor, E. N. GATHERCOAL, 701 South Wood St., Chicago, Illinois.

Physiology. B. M. DUGGAR, Missouri Botanical Garden, St. Louis, Missouri.Assistant Editor, WILLIAM J. ROBBINS, University of Missouri, Columbia, Missouri.

Soil Science. A. G. MCCALL, University of Maryland, College Park, Maryland. Taxonomy of Vascular Plants. J. M. GREENMAN, Missouri Botanical Garden, St. Louis, Missouri.-Assistant Editor, E. B. PAYSON, University of Wyoming, Laramie, Wyoming.