235 



gf 



Washington, D.C., Bull. 



U.S. Dept. Agric. Div. 



Bof. 

 Wa.ihington, D.C., Bull 



U.S. Dept. Agric. Div 



Chem. 

 Washington, D.C., Bull- 



U.S. Dept. Agric. Div. 



Ent. 

 Washington, D.C., Bull. 



U.S. Dept. Agric. Div. 



Forest. 

 Washington, D.C., Bull. 



U.S. Dept. Agric. Div. 



Pom. 

 Washington, D.C., Bull. 



U.S. Dept. Agric. Div. 



Soils 

 Washington, D.C., Bull. 



U.S. Dept. Agric. Div. 



Veget. Physiol. 

 Washington, D.C., Bull. 



U.S. Dept. Agric. Off. 



Exp. Sta.. 

 Washington, D.C., Bull. 



U.S. Fish Com. 

 Washington, D.C., Carnegie 



Inst., Year Book 

 Washington, D.C., Cir. 



U.S. Dept. Agric. Bur. 



Anim. Indust. 

 Washington, D.C., Cir. 



U.S. Dept. Agric. Div. 



Agrost. 

 Washington, D.C., Cir. 



U.S. Dept. Agric. Div. 



Biol. Surv. 

 Washington, DC, Cir. U.S. 



Dept. Jgric. Div. Bot. 

 Washington, D.C., Cir. 



U.S. Dept. Agric. Div. 



Chem 

 Washington, D.C., 



U.S. Dept. Agric. 



Ent. 

 Washington, D.C., 



U.S. Dept. Agric. 



Forest. 

 Washington, 



U.S.' Dept 



Pom. 

 Washington, D.C., 



U.S. Dept. Agric. 



Soils 

 Washington, D. C, 



U.S. Dept. Agric. 



Veget. Physiol. 



Cir. 

 Div. 



Cir. 

 Div. 



D.C., Cir. 

 Agric. Div. 



Cir. 

 Div. 



Cir. 

 Div. 



Bulletin. U.S. Department of Agriculture. 

 Division of Botanj, Washington, D.C. [M 



Bulletin. U.S. Department of Agriculture. 



Division of Cliemistrv, Washington, D.C. 



[DFM 

 Bulletin. U.S. Department of Agriculture. 



Division of Entomology, Washington, D.C. 



Bulletin. U.S. Department of Agriculture. 

 Division of Forestry, Washington, D.C. [M 



Bulletin. U.S. Department of Agriculture. 

 Division of Pomology, Washington, D.C. [M 



Bulletin. U.S. Department of Agriculture. 

 Division of Soils, Washington, D.C. [DM 



Bulletin. U.S. Department of Agriculture. 

 Division of Vegetable Physiology and Patho- 

 logy, Washington, D.C. [M 



Bulletin. U.S. Department of Agriculture. 

 Office of Experiment Stations, Washington, 

 D.C. [BCDFGMNE 



Bulletin of the U.S. Fish Commission, Washing, 

 ton, D.C. [N 



Carnegie Institution of Washington. Year Book, 

 Washington, D.C. 



Circular. U.S. Department of Agriculture. 

 Bureau of Animal Industry, Washington, 

 D.C. [N 



Circular. U.S. Department of Agriculture. 

 Division of Agrostology, Washington, D.C. [M 



Circular. U.S. Department of Agriculture. 



Division of Biological Survey, Washington, 



D.C. [LMN 



Circular. U.S. Department of Agriculture. 



Division of Botany, Washington, D.C. [M 

 Circular. U.S. Department of Agriculture. 



Division of Chemistry, Washington, D.C. 



[DM 

 Circular. U.S. Department of Agriculture. 



Division of Entomology, Washington, D.C. 



Circular. U.S. Department of Agriculture. 

 Division of Forestry, Washington, D.C. [M 



Circular. U.S. Department of Agriculture. 

 Division of Pomology, Washington, D.C. [M 



Circular. U.S. Department of Agriculture. 

 Division of Soils, Washington, D.C. [DM 



Circular. U.S. Department of Agriculture. 

 Division of Vegetable Physiology and Patho- 

 logy, Washington, DC. [M 



460 



461 



462 



463 



464 



465 



466 



467 



467« 

 468 

 469 



470 



471 



472 

 473 



474 



475 



476 



477 



478 



