254 MORPHOLOGY AND TAXONOMY OF FUNGI, ETC. [Bot. Absts.. Vol. V, 



grams of bakers' or brewers' j r east in 100 cc. of water for 20 minutes; steam for 2 hours at 100°; 

 filter twice through filter paper, or perhaps preferably, clarify by use of glass wool; prepare a 

 2.5 per cent agar with or without peptone and salt; to each 60 cc. of agar, add 40 cc. of yeast 

 decoction; sterilize in autoclave for 20 to 30 minutes. A semisolid yeast agar (0.5 per cent 1 * 

 "will prolong the viability for beyond the periods observed for the solid medium." — [From 

 abst. of paper read at scientific session, Soc. Amer. Bact.] — D. Reddick. 



1941. Ferdinandsen, C, and 0. Winge. A Phyllachora parasitic on Sargassum. Myco- 

 logia 12: 102-103. 2 fig. 1920. — Phyllachora oceanica is described as a new species. It pro- 

 duces swellings on Sargassum. — H. R. Rosen. 



1912. Gilbert, E. M. A peculiar entomophthorous fungus. Trans. Amer. Microsc. Soc. 

 38: 263-269. PI. 27, 28, fig. 1-23. 1919.— Among the fungi found on fern prothallia grown in 

 water cultures or on moist sphagnum, one appeared from time to time which seemed to be a 

 vigorous parasite. It was isolated and pure cultures were obtained on Thaxter's potato hard- 

 agar plus Loffltjnd's malt extract. An effort was made to find an insect upon which it would 

 grow; but no infections were secured upon any of the insects of the greenhouse, nor upon vig- 

 orous fern prothallia, although it would grow on dying fern prothallia. The fungus seems 

 to be of a decided saprophytic nature. Other investigators have observed a saprophytic 

 condition in certain members of the Entomophthorales. The fungus grows rapidly. No 

 haustoria or rhizoidal growths are found. The hyphae branch and become septate; the cells 

 compare favorably with those of Empusa, but differ in many particulars. The shape and size 

 of cells vary greatly. Conidiophores arise usually from terminal cells. No sclerotia are 

 found. Conidiophores, usually simple, are sometimes compound, each branch producing a 

 single conidium. By a process not fully understood, the basidium ruptures and projects the 

 ripened conidium often to a distance of 65 mm. Upon a substratum containing moisture the 

 conidia germinate in from 6 to 12 hours and put forth from one to four germ tubes which de- 

 velop a typical mycelium. Upon a dry surface the conidia germinate and produce secondary 

 conidia which are discharged like the primary ones, and these may germinate and produce 

 tertiary spores. Primary conidia have diameters of 48 to 60 n, secondary, 35 to 40/t, and the 

 tertiary 20 n. Some conidia do not germinate upon an unfavorable substance; but form a 

 thick wall and appear to be resting spores, although germination has not been observed. — 

 S. H. Essary. 



1913. Gilkey, Helen M. Two new truffles. Mycologia 12: 99-101. Fig. 1. 1920.— 

 Tuber canaliculatum and T. unicolor are described as new species. — //. R. Rosen. 



1944. Hammer, B. W. Bacteriological results obtained in practice with vat pasteurization 

 and with one of the final package methods. Iowa Agric. Exp. Sta. Bull. 190: 151-158. 1919. 



1945. Hammer, B. W. Studies on formation of gas in sweetened condensed milk. Iowa 

 Agric. Exp. Sta. Res. Bull. 54: 211-220. 2 fig. 1919.— See Bot. Absts. 5, Entry 2199. 



1946. Hammer, B. W., and D. E. Bailey. The volatile acid production of starters and of 

 organisms isolated from them. Iowa Agric. Exp. Sta. Res. Bull. 55: 223-246. 1919. — See Bot. 

 Absts. 5, Entry 2172. 



1917. Hemmi, Takewo. Vorlaufige Mitteilung ueber eine Anthracnose von Carthamus 

 tinctorius. [Preliminary report of an anthracnose of Carthamus tinctorius.] Ann. Phytopath. 

 Soc. Japan l 2 . 11 p., fig. 1-2. 1919.— See Bot. Absts. 3, Entry 2659. 



1948. Herre, Albert C. Notes on Mexican lichens. Bryologist 23 : 3-4. 1920. 



1919. Herre, Albert C. Hints for lichen studies. Bryologist 23 : 26-27. 1920. — Much 

 valuable work could be done upon the physiology of the growth and luxuriance of lichens, 

 especially in the case of rock- or bark-inhabiting species, without taxonomic knowledge. 

 There are great possibilities in the study of the inheritance of lichen species. — E. B. 

 Chamberlain. 



