22 MORPHOLOGY AND TAXONOMY OF FUNGI, ETC. [Bot. Absts., Vol. VI, 



159. Taylor, A. Mosses as formers of tufa and floating islands. Bryologist 22: 38-39. 

 1919.— See Bot. Absts. 4, Entry 306. 



160. Theriot, I. Notes bryologiques. I. Syrrhopodon Taylori Schwaegr. Bull. Soc. 

 Bot. Geneve 11: 24-28. 1919. — The original description of Syrrhopodon Taylori Schwaegr. 

 is erroneous as to the peristome. An examination of the type specimen leaves no doubt con- 

 cerning the identity of the plant, which is a species of Leucoloma, according to the description 

 of this genus by Mitten, and the species in question is properly named Leucoloma Taylori 

 (Schwaegr.) Mitt. Leucoloma sarcotrichum C. Mull, is synonymous. — W. H. Emig. 



161. Theriot, I. Notes bryologiques. II. Fabronia longidens Duby. Bull. Soc. Bot. 

 Geneve 11: 28-29. 1919. — The moss described by Dtjby, in 1867, as Fabronia longidens is 

 Dimerodontium pellucidum (Hook.) Mitt. The specific name pellucidum is misleading, for 

 the color of the moss is dull green like that of the species of Leskea. — W. H. Emig. 



162. Twiss. W. C. A study of the plastids and mitochondria in Preissia and corn. Amer. 

 Jour. Bot. 6: 217-234. PL 83-34. 1919.— See Bot. Absts. 3, Entry 1942. 



MORPHOLOGY AND TAXONOMY OF FUNGI, LICHENS, BACTERIA 



AND MYXOMYCETES 



H. M. Fitzpatrick, Editor 

 MYXOMYCETES 



163. Lister, G. The Mycetozoa, a short history of their study in Britain, an account of 

 their habitats generally, and a list of species recorded from Essex. 4 + 54 V- The Essex Field 

 Club, Stratford; Simpkin, Marshall & Co., Ltd.: London, 1918. [Essex Field Club Special 

 Memoirs, Vol. 6.] 



BACTERIA 



164. Atkins, Kenneth N. A modification of the Gram stain. [Abstract.] Absts. Bact. 

 4: 4. 1920. — "A stable staining solution consists of a 1 per cent aqueous solution aniline 

 sulphate, 3 parts; saturated alcoholic solution Gentian violet, 1 part. The iodine solution 

 contains 2 grams iodine, 10 cc. normal sodium hydroxide solution, water 90 cc. Time for 

 staining and treatment with modified iodine solution, 1 minute each." [Author's abst. of 

 paper read before Soc. Amer. Bact.] 



165. Bronfenbrenner, J. Some improvements in the methods for the identification of 

 bacteria. [Abstract.] Absts. Bact. 3: 6. 1919. — Endo agar as a stock medium is unsatis- 

 factory because of instability of color. By substituting a "proper mixture" of rosolic acid 

 and China blue for the sodium sulphite-fuchsin mixture, as an indicator in lactose agar, a 

 better medium is secured. The agar is practically colorless. Organisms which ferment lac- 

 tose are promptly indicated by intense blue color of the colony, those which do not, remain 

 colorless or pink. For isolation, buffer is adjusted to permit earliest possible detection. — 

 Identification by means of carbohydrate fermentation tests is hastened by use of "micro- 

 plates." Single drops of the media to be tested are placed in a single Petri dish at points 

 previously touched with a needle bearing the organism to be tested. The method is also 

 useful in testing for gelatin liquefaction, starch hydrolysis, hydrogen-sulfid formation, 

 reduction of nitrates, etc. [From author's absts. of paper read at scientific session, Soc. 

 Amer. Bact.] — D. Reddick. 



166. Bronfenbrenner, J., M. J. Schlesinger; and D. Soletsky. Study in China- 

 blue-rosolic-acid indicator. [Abstract.] Absts. Bact. 4: 12. 1920. 



