XXll 



COLLABORATORS FOR BOTANICAL ABSTRACTS 



Sparha-w-k, VV. N.— U. S. Forest Scrv., Washington, D. C. 

 Stadleb, L. J. — Univ. of Missouri, Columbia, Mo. 

 Stakman, E. C. — Univ. of Minnesota, Univ. Farm, St. 



Paul, Minn. 

 Stanford, E. E. — Western Reserve Univ., Cleveland, Ohio 

 Sterling, C. M. — Univ. of Kansas, Lawrence, Kans. 

 Stevens, O. A. — North Dakota Agrie. Coll., Agricultural 



College, N. Dak. 

 Stevens, W. C. — Univ. of Kansas, Lawrence, Kans. 

 Stevenson, J. A. — Fed. Hort. Bd., Washington, D. C. 

 Stewart, F.C — New York Agric. Exp.Sta., Geneva, N.Y. 

 Stoket, Miss A. G. — Mt. Holyoke Coll., South Hadleij, 



Mass. 

 Stout, A. V.—New York Bot. Card., New York, N. Y. 

 Stuart, W. — Bur. of Plant Indust., Washington, D. C. 

 Summer, F. B. — Scripps Inst., La Jolla, Calif. 

 SwEETSER, A. R.~Univ. of Oregon, Eugene, Ore. 



Tammes, Miss T. — Univ. of Groningen, Groningen, The 



Netherlands 

 Tatlor, W. R. — Univ. of Pennsylvania, Philadelphia, Pa. 

 Thelin, G. — Massachusetts Agric. Coll., Amherst, Mass. 

 Thomas, R. C. — Ohio Agric. Exp. Sta., Wooster, Ohio. 

 Thompson, H. C. — Cornell Univ., Ithaca, N. Y. 

 Thompson, W. P. — Univ. of Saskatchewan, Saskatoon, 



Canada. 

 Thomson, R. B. — Univ. of Toronto, Toronto, Canada 

 TiFFANT, L. H. — Ohio State Univ., Columbus, Ohio 

 Tillotson, C. R. — U. S. Forest Serv., Washington, D. C. 

 Toole, E. — Univ. of Wisconsin, Madison, Wis. 

 TowNSEND, C. O. — Bur. of Plant Indust., Washington, D.C. 

 Transeau, E. N. — Ohio State Univ., Columbus, Ohio. 



Uphof, J. C. Th. — 6S0 Prinsengracht, Amsterdam, The 

 Netherlands 



Valleau, VV. D. — Univ. of Kentucky, Lexington, Ky. 

 ViNALL, H. N. — Bur. of Plant Indust., Washington, D. C. 



Waksman, S. — Rutgers Coll., New Brunswick, N. J. 

 Waldron, L. R. — North Dakota Agric. Coll., Agricultural 

 College, N. Dak. 



Walker, Miss E. R. — Univ. of Nebraska, Lincoln, Neb. 



Walker, Miss L. B.— Univ. of Nebraska, Lincoln, Neb. 



Waller, A. E. — Ohio State Univ., Columbus, Ohio 



Waterman, W. G.- — Northwestern Univ., Evanston, III. 



Weaver, J. A. — Univ. of Nebraska, Lincoln, Neb. 



Weidman, R. H. — U. S. Forest Serv., Portland, Ore. 



Weimer, J. L. — Bur. of Plant Indust., Washington, D. C. 



Weiss, F. — Bur. Plant Indust., Washington, D. C. 



Welch, D. S.~Cornell Univ., Ithaca, N. Y. 



Weniger, Miss W.— North Dakota Agric. Coll., Agricul- 

 tural College, N. Dak. 



Westerdijk, Miss J. — Phytopath. Lab., "Willie Commelin 

 SchoUen", Baarn, The Netherlands 



Westgate, J. M. — Hawaii Agric. Exp. Sta., Honolulu, 

 Hawaii 



Westveld, M. — U. S. Forest Serv., Albuquerque, N. Mex. 



White, O. E. — Brooklyn Bot. Card., Brooklyn, N. Y. 



Wiancko, A. T. — Purdue Univ., Lafayette, Ind. 



Wiegand, K. 'SI.— Cornell Univ., Ithaca, N. Y. 



Wiggins, C. C. — Univ. of Nebraska, Lincoln, Neb. 



Wiggans, R. G. — Cornell Univ., Ithaca, N. Y. 



Wilcox, E. M. — 1015 Terminal Bldg., Lincoln, Neb. 



Willey, Miss F. — Iowa Agric. Exp. Sta., Ames, la. 



Wilson, C. L. — Cornell Univ., Ithaca, N. Y. 



Wilson, O. T. — Univ. of Cincinnati, Cincinnati, Ohio 



Wolf, F. A. — North Carolina Agric. Exp. Sta., W. Raleigh, 

 N.C. 



Wtlie, R. B. — Univ. of Iowa, Iowa City, la. 



Yamanouchi, S. — Tokyo Teachers' Coll., Tokyo, Japan 

 Yampolskt, C. — A. V. R. 0. S., Medan, Sumatra 

 Young, V. H. — Univ. of Idaho, Moscow, Idaho 

 YouNGKEN, H. W. — Philadelphia Coll. Pharm., Philadel- 

 phia, Pa. 



Zeller, S. M. — Oregon Agric. Coll., Corvallis, Ore. 

 ZiEGLER, E. a. — State Forest Acad., Mont Alto, Pa. 

 ZoN, R.— J7. S. Forest Sen., Washington, D. C. 



