1019) FIELD CROPS. 39 



breeder, with special reference to maintaining and improving the bread-making 

 qualities and the food value of wheat. 



An anomaly of wheat anthers, S. A. Anthony {-lour. Heredity, 9 (1918). Xo. 

 4, pp. 166-168, figs. 2). — This reports observations in a greenhouse of the U. S. 

 Department of Agriculture at Arlington, Va., of an anomaly of the anthers on 

 a head of wheat in which one-half of the sporophyll was transformed into a 

 process bearing stigma hairs. That an organ-forming substance of a different 

 organ may have influenced the primordlum of the sporophyll is deemed possible, 

 as suggested by Sachs and Loele, while Goebel has considered hormones and 

 changes of the concentration of the protoplasmic fluids as possible explanations 

 of such phenomena. Abnormal physical factors of temperature or moisture are 

 thought to have been possible contributing factors, since the anomaly occurred 

 in the greenhouse. 



A study of Colorado wheat, XV. P. Headden (Colorado Sta. Bui. 247 (1918), 

 pp. 3-15). — This bulletin presents a brief recapitulation of the results obtained 

 in Bulletins 205, 208, 217, 219, 237, and 244, previously noted (E. S. It., 33, pp. 

 41, 637; 35. p. S32 ; 37, p. 38; 39, pp. 238, 443). 



Effect of fertilizers on wheat, 1917—18 crop, C. H. Spubway (Michigan 

 Sta., Quart. Bui, 1 (1918), Xo. 1, pp. 34-86, fig. 1).— The results of demonstra- 

 tion experiments with fertilizers for four varieties of wheat grown under 

 different soil and cropping conditions are held to indicate that fertilizers high 

 in phosphoric acid had a marked effect in increasing the yelds of both grain 

 and straw. 



Official grain standards of the United States for wheat [and shelled corn], 



D. F. H»vston (U. S. Dept. Agr., Bur. Markets Sen-, and Regulatory Announce- 

 ment 33 (1918), pp. SO). — Modifications effective July 15, 1918, are presented of 

 the previous official standards for wheat and shelled corn under the United 

 States Grain Standards Act (E. S. R., 36, p. 442). 



Handbook official grain standards for wheat and shelled corn, compiled by 



E. G. Boerner (U. S. Dept. Agr., Bur. Markets, 1918, pp. 47, figs. 7).— This com- 

 prises a tabulated and abridged description of the official grain standards of 

 the United States for wheat and shelled corn, as set forth in the publication 

 noted above, together with a brief discussion of methods of sampling and 

 grading thereunder. 



[Clover and alfalfa seed investigations], W. J. France: and G. WmsnuoA 

 (If rsiug. Landbouwk. Onderzoek. Kijkslandbouicprocfstat. [Netherlands], Xo. 

 21 (1917), pp. 29-120, pis. 19, figs. 4)- — This is a comprehensive account of exten- 

 sive germination and purity tests of clover and alfalfa seed, and of field 

 practices employed in growing leguminous crops for seed, forage, and soil 

 improvement. Numerous illustrations and brief descriptions of weed seeds 

 encountered in the tests are given, together with groupings of the weed seeds 

 for purposes of identifying the origin of the sample. On this basis a classifi- 

 cation is presented, designed to identify seeds from North and South America 

 and southern, eastern, or western Europe. Seeds of different clovers and 

 alfalfas are also described and illustrated, together with various related plants, 

 such as sweet clover, vetch, etc. 



Resistance of seeds to desiccation, G. T. Harrington and W. Cbockeb (Jour. 

 Agr. Research [U. S.], 14 (1918), Xo. 12, pp. 525-532). — This paper, a contribu- 

 tion from the Bureau of Plant Industry of the U. S. Department of Agriculture, 

 describes experimental work made in an effort to determine the effect on the 

 vitality of barley, wheat, Sudan grass, and Johnson grass seed when dried 

 under varying conditions and for different lengths of rime. The investigations 

 were begun in January, 1917, and continued throughout 10J months, the seeds 



104628°— 19 4 



