522 EXPERIMENT STATION RECORD. 



Fertilizer analyses, H. B. McDonnell et al. (Md. Agr. Col. Quart., 191S, 

 No. 61, pp. J/O). — This bulletin gives tables showing analyses and valuations of 

 fertilizers inspected from February to July, 1913, inclusive. 



Analyses of fertilizers, spring season, 1913, B. W. Kilgoke et al. (Bui. 

 N. C. Dept. Agr., SJf (1913), No. 3, pp. 99).— This bulletin contains analyses and 

 valuations of fertilizers collected by the fertilizer inspectors of the state depart- 

 ment of agriculture during the spring of 1913, as well as a list of brands of 

 fertilizers registered during the fall of 1912. 



[Fertilizer inspection in Ohio] (Off. Bui. Ohio Dept. Agr., 4 (1913), No. 4, 

 pp. 23-65). — Guarantied analyses of fertilizers licensed for sale in Ohio from 

 January 1 to June 1, 1913, and analyses and valuations of samples examined 

 during December, 1912, are tabulated. 



AGRICULTURAL BOTANY. 



Studies in Trifolium, P. B. Kennedy (Muhlenhergia, 9 (1913), No. 1-2, pp. 

 1-29, i)ls. 5). — In continuation of a series of papers previously noted (E. S. R.. 

 21, p. 27), the author gives an account of studies of the Macrsei group of 

 Trifolium, the information being based not only on herbarium specimens but 

 also on greenhouse and field material. 



Botanical and agronomic studies on Typha, J. B. GI:ze (Etudes Botaniques 

 et Agronomiques sur les Typha. Villefranche-de-Rouergue, 1912, pp. VIII+174, 

 pis. S). — Besides a morphological study of the various species and varieties of 

 Typha, an account is given of a cultural study carried out with T. domingensis 

 australis in the marshy lands of Fos (Bouches-de-Rhone), resulting, it is 

 claimed, in the establishment of two subvarieties and in the elaboration of im- 

 proved methods of cultivation. 



Notes on pollination and cross-fertilization in th.e common rice plant, 

 G. P. Hectob (Mem. Dept. Agr. India, Bot. Ser., 6 (1913), No. 1, pp. 10).— The 

 results are given of a study of the characters of single rice plants in order to 

 ascertain to what extent natural cross-fertilization takes place, this being pre- 

 liminary to work in producing seed of improved types. 



It is found that under favorable conditions in Lower Bengal cross-fertiliza- 

 tion may take i:)lace in rice to the extent of about 4 per cent of the plants. 

 This is brought about wholly by the agency of the wind, and would be effective 

 only between flowers of adjacent plants within a radius of a few feet. The 

 author states that so long as seed of a variety is kept .free from accidental 

 mixture there is little risk of contamination from cross-fertilization. 



Some studies are reported on the segregation of characters, and so far as 

 grain color is concerned it appears to follow Mendelian lines. 



The relationship bet-ween the weight of the seed planted and the char- 

 acteristics of the plant produced, I, J. A. Harris (Biometrika, 9 (1913), No. 

 . -2, pp 11-21, figs. 3). — This is the first of a series of papers by the author, and 

 ^® .* Tiited to the presentation of data on the number of pods per plant of beans. 

 J^ ^udy was made on three varieties grown in 20 series to determine, among 

 ^ Auced^tors, the influence of the weight of the seed on the number of pods 

 ^'^ r£ji The seeds were carefully selected to secure sound mature speci- 



"^^ ted u^*^ were carefully dried, weighed, and divided into three lots and 

 ^ ' r as mu^'' conditions that it was believed would reduce the liability to 

 rjYie essenti as possible. 

 , j^re pT^eS/1 data showing the number of pods produced by each grade of 



® not inrented, from which it appears that while the mean number of pods 



^ the hearease at the same rate from the lowest to the highest, the lightest 

 viest, grade of seeds, practically they may be considered as doing so. 



