818 EXPERIMENT STATION RECORD. [Vol.43 



Commercial fertilizers, E. G. Proulx et al. (Indiana Sta. Bui. 2^1 {1920), 

 pp. S-99, fig. 1). — This bulletin contains the results of actual and guarantied 

 analyses of 1,401 samples of fertilizers and fertilizer materials, representing 

 716 brands, collected for inspection in Indiana during the spring and fall 

 of 1919. 



It was found that the greatest number of deficiencies were in potash. Of 

 the 31 classes available for inspection, 26 were found to equal or exceed the 

 guai-anty in every particular, 2 were below the guaranty in nitrogen. 3 in 

 potash, and 1 in total phosphoric acid. 



Analyses of fertilizers — ^spring season, 1920, J. K. Plummer, .tr. {Bui. 

 N. C. Dept. Ayr., 1,1 {1920), Nos. 9, Sup., pp. 7; 11, Sup., pp. 9).— These bulletins 

 contain the results of actual and guarantied analyses and valuations of 130 

 and 123 samples, respectively, of fertilizers and fertilizer materials collected 

 for inspection in North Carolina during the spring season of 1920. 



AGRICULTURAL BOTANY. 



General botany, H. D. Densmore (Boston: Ginn & Co., 1920. pp. XII-\-459, 

 pi. 1, figs. 292). — Of the three main parts of this book, the first deals with biol- 

 ogy of the higher seed plants, the second with the plant groups, and the third 

 with representative families and species of the spring flora. Laboratory di- 

 rections are printed under separate cover. 



New methods and aims of botanical systematization, A. Thellung 

 [Naturw. WcJmschr., 33 {1918), Nos. 32, pp. U9-458, figs. 3; 35, pp. 465-.',lr Jf) .— 

 This method, employing in addition to the principles of morphology those of 

 hybridization, phytogeography, and serology, is illustrated as dealing princi- 

 pally with the cereals Avena, Triticum, Secale. and Hordeum. 



On the stability and heredity of Crataegomespilus and of Pirocydonia, 

 L. Daniel {Compt. Rend. Acad. Sci. [Paris], 169 {1919), No. 11, pp. 513-515).— 

 A study of Cratfegomespilus, a graft hybrid between hawthorn and medlar, 

 shows the hybrid to possess incomplete stability, separating in various de- 

 grees the parental characters, both morphological and physiological, and show- 

 ing complete sterility. Pirocydonia danieli, completely lacking in sexuality, 

 is said to be stable. 



Survey of CEnothera problems, H. N. Kooiman {Genetica [The Hague], 1 

 {1919), No. 2, pp. 13^-148). — This is a synthetic review of work bearing on the 

 problems presented by CEnotheras, including reference to about 20 related 

 publications. 



The CEnotheras as nuclear chimeras, J. P. Lotsy, H. N. Kooiman, and 

 M. A. J. Goedewaagen {Genetica [The Hague], 1 {1919), No. 2, pp. 113-129).— 

 This is an analytical discussion of Morgan's crossing-over hypothesis. 



Anomalous papayas and digitiform oranges, C. Bernard {Ann. Jard. Bot. 

 Buitenzorg, 31 {1920), pt. 1, pp. 26-36, pis. 2, fig. 1). — Accounts with discussion 

 are given of anomalies of development and associated features mainly affecting 

 the reproductive regions as exemplified in Carica papaya and in Citrus medica 

 limonum digitata. 



Heredity studies with beans, K. Tjebbes and H. N. Kooijian {Genetica 

 [The Hague], 1 {1919), No. 4, pp. 323-346, pi. 1).— This contribution is in two 

 parts, each summarized in French. The first deals with experimentation in the 

 crossing of two varieties of Phaseolus vulgaris, the results of which are held to 

 indicate a Mendelian monohybrid segregation. The second part deals with a 

 constant spotting in a spontaneous hybrid. 



Recent methods of phylogenetic plant anatomy, W. Nienburg {Naturiv. 

 Wchnschr., S3 (1918), No. 8, pp. 105-112, figs. 26). — This is a review of what are 



