AGRICULTURAL BOTANY. 27 



Analyses and valuations of commercial fertilizers, C. S. Cathcart et al. 

 (New Jersey Stas. Bui. 274- {1914), pp. 3-S3). — ^Analyses and valuations of 935 

 samples of fertilizers and fertilizing materials offered for sale in New Jersey 

 during 1914 are reported. The average composition, valuation, and selling 

 price of the 60S mixed fertilizei's examined were as follows : Total nitrogen 

 2.G6 per cent, total phosphoric acid 9.24, available phosphoric acid 7.75, potash 

 6.91, station's valuation $22.40, and selling price $29.51. Of the 60S mixed 

 fertilizers 420 were found to be as guarantied. The reported tonnage for the 

 year ended October 31 was 155.414 tons. 



Fertilizer registrations, C. S. Cathcart {Ne-w Jersey Stas. Bui. 275 {1915), 

 pp. 3-34). — ^ list of brands, with guarantied composition, of mixed fertilizers 

 and fertilizer materials offered for sale in New Jersey during the fiscal year 

 ended October 31, 1915, is given. 



AGRICULTURAL BOTANY. 



Applied and economic botany, 11. Kraemer {Philadelphia: Author, 1914, 

 pp. VI-\-80G, pis. 2, figs. 420). — This book is designed to meet the needs of 

 students in technical schools and in agricultural, pharmaceutical, and medical 

 colleges, also to serve as a book of reference for chemists, food analysts, and 

 students in the morphological and physiological study of plants. The facts and 

 illustrations presented are intended to give the latest information regarding 

 morphology, origin, and distribution, also chemical nature, of the plants studied. 

 On account of the contamination of the materials on the market, especially with 

 lower plant forms, a more or less succinct treatment of the principal groups of 

 lower and higher forms is given. The several chapters deal with the principal 

 groups of plants, cell contents and forms of cells, outer and inner morphology 

 of the higher plants, botanical nomenclature, classification of angiosperms yield- 

 ing economic products, cultivation of medicinal plants, and microscopic tech- 

 nique and reagents. 



The vegetation of Nantucket, J. W. Haeshberger {Reprint from Bui. 

 Oeogr. Soc. Philadelphia, 12 {1914), No. 2, pp. 70-19, pis. 5, fig. i).— Giving a 

 brief description of the vegetation on the island of Nantucket, the author states 

 that the two main factors in producing the present almost treeless condition of 

 the island are the evaporating action of the wind and the nature of the soil. 



The character of the tubers of Batatas edulis, Z. Kamerling {Ber. Deut. 

 Bot. Gesell., 32 {1914), No. 5, pp. 352-360, figs. 8).— From work as carried out 

 with B. edulis to determine whether its tubers are to be regarded as roots or 

 stems, the author concludes that the significance of these bodies lies In their 

 relation to the vegetative propagation of the plant. 



The structure of clover blooms, V. Fominykh {Zhur. Opytn. Agron. {Russ. 

 Jour. Expt. Landw.), 15 {1914), No. 5, pp. 395-400, figs. 7/).— The author de- 

 scribes the nectary of TnfoUuin pratense, which, it is claimed, has not been 

 adequately done heretofore. 



Studies of Camptosorus rhizophyllus, F. L. Pickett {Proa. Ind. Acad. Sci., 

 1913, pp. 129, 130). — Studies on this plant show it to possess two important 

 adaptive factors, namely, an unusual power of promiscuous growth in the pro- 

 thallial cells and ability to resist extreme desiccation. 



The sexuality of rust fungi, F. Rawitscher {Ber. Deut. Bot. Gesell., 32 

 {1914), No. 5, pp. 310-314, figs. 4)- — ^This is a brief report of some preliminary 

 observations, noting more particularly the copulation of sporidia in Tilletia 

 tritici and the subsequent behavior of the resulting binucleate hyphte. 



Recent aspects of mutation, R. R. Gates {Nature [London], 94 {1914), No. 

 2350, pp. 296-299). — This is mainly a review of recent publications regarding 



