No. 1, July, 1920] CYTOLOGY 21 



168. Chamberlain, C. J. Chromosomes in Carex. [Rev. of: BbilboBN, Otto. Zur 

 Embryologie und Zytologie einiger Carex-Arten. Embryology and cytology of several species 

 of Carex. Svensk Bot. Tidskr. 12: 212-220. t6 fig. L918. (See Bot. Absts. 1, Entry 1329; 

 3, Entry 38.)] Bot. Gaz. 67 : 448. L919. 



109. Chamberlain, C. J. Chondriosomes in plants. [Rev. of : Mottibb, D. M. Chon- 

 driosomes and the primordia of chloroplasts and leucoplasts. Ann. Botany 32: 191-214. 

 1 pi. 1918. See Bot. Absts. 2, Entry 81.] Bot. Gaz. 67: 270 271. 1919.— The reviewer dis- 

 cusses the names that have been applied to chondriosomes and similar structures, preference 

 being given to mitochondria and chondriosomes as most likely to survive ; chondriosomes seems 

 the best term, because most noncommittal. The author's claim that chondriosomes are 

 concerned in the transmission of hereditary characters is thought not to be well supported. — 

 H. C. Cowles. 



170. Cleland, Ralph E. The cytology and life-history of Nemalion multifidum, Ag. 

 Ann. Botany 33: 323-351. PI. 22-24, 3 Jig. 1919.— See Bot. Absts. 4, Entry 1016. 



171. Coulter, J. M. Embryo sac and fertilization in Oenothera. [Rev. of: Ishikawa, 

 M. Studies on the embryo sac and fertilization in Oenothera. Ann. Botany 32 : 279-317. 7 pi., 

 14 Jig. 1918. (See Bot. Absts. 1, Entries 482, 979, 980.)] Bot. Gaz. 67: 275-276. 1919. 



172. Ensign, M. R. Venation and senescence of polembryonic citrus plants. Amer. Jour. 

 Bot. 6: 311-329. 6 Jig. 1919.— See Bot. Absts. 4, Entry 1555. 



173. Hitchcock, R. Preliminary note on the differential staining of the cytoplasm of 

 Characeae. Bull. Torrey Bot. Club 46: 375-379. 1919— See Bot. Absts. 4, Entry 1022. 



174. Levine, Michael. Sexuality in the Basidiomycetes. [Rev. of: Bensatjde, Ma- 

 thildae. Recherches sur le cycle evolutif et la sexualite chez les Basidiomycetes. P. 1-16. 

 PL 1-13, Jig. 1-30. Nemours, 1918.] Mycologia 11: 280-283. 1919.— See Bot. Absts. 4, En- 

 try 1121. 



175. Molisch, Hans. Beitr'age zur Mikrochemie der Pflanze. [Contribution to the micro- 

 chemistry of plants.] Ber. Deutsch. Bot. Ges. 36: 474-481. 1919.— See Bot. Absts. 4, Entry 

 1000. 



176. Pechoutre, F. Revue de botanique. [Review of Botany.] Rev. Gen. Sci. Pures et 

 Appliqu6es30: 242-250, 1919.— A general review of papers in "the four languages" on the cell, 

 morphology and anatomy, carbon assimilation, parasitism, symbiosis, reproduction and par- 

 thenogenesis, and the thallophytes. Under this last heading are treated sexuality in the Basidi- 

 omycetes, a parasitic Laminaria, and alternation of generations in the brown algse. — G. J. 

 Peirce. 



177. Pujiula, Jaime. Algunas observaciones citologicas, sobre todo en Hedera Helix y 

 Solanum tuberosum, y la primera variante del metodo tano-argentico, introducida por el Sr. 

 del Rio-Hortega. [Certain cytological observations, chiefly on Hedera Helix and Solanum 

 tuberosum, and the first variation, introduced by Sr. Rio-Hortega, of the argentic tannate 

 method.] Broteria: Ser. Bot. 17: 67-96. 2 pi., 17 Jig. 1919.— This study was undertaken to 

 verify certain statements concerning plastids, and to estimate the reliability of a method of 

 staining. Most of the work was done upon Hedera Helix and Solanum tuberosum, although 

 Agave sp., Pittosporum undulatum, Cornus mas, and the roundworm (Ascaris megalocephala) 

 were also investigated. Results were checked in all cases by comparing preparations with 

 living material. The cell structure is much broken up by the shock of sectioning, and care 

 must constantly be used to avoid misinterpretation. The "metodo tano-argentico" passes 

 paraffine sections through warm aqueous solutions of tannin, weak ammonia, ammoniacal 

 silver, distilled water, gold chloride, and sodium hypochlorite. Protoplasmic granules, plas- 

 tids, and starch grains color clearly. Karyokinetic figures show with especial distinctness, 

 the intense blackish coloration permitting excellent photographic record. Resting nuclei 



