ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
97 
Teratomyces . — Receptacle consisting of several superposed cells sur- 
mounted by a series of smaller cells which surround certain central 
cells, from which the peritheces arise, and produce distally a circle of 
appendages, from within which the long-stalked perithece is exserted. 
Peritheces one or more in number, symmetrical, the pedicel consisting 
of an elongate basal and three distal cells. Appendages consisting of 
one or more superposed cells, each producing externally a single row of 
branches. 
Ringworm in Man.* * * § — M. R. Sabouraud, after a microscopical ex- 
amination of 100 cases of ringworm, has determined that this disease is 
caused by two different parasites. The one is characterized by aggrega- 
tions of small spores, 3 /x, and by the absence of mycele, the other by 
large spores, 7 or 8 /x, and the presence of a mycele. The small spores 
not only fill the hair, but encase it in a sort of sheath ; the large spore 
growth is always inside the hair and does not form an investment. 
Cultivation experiments confirmed the opinion derived from micro- 
scopical examination. The small spore Tinea is almost entirely confined 
to the hair of the scalp. The large spore Tinea affects the skin of the 
body generally and the hair of the beard. 
Fungus found in Phthisical Cavities and Sputa.f — Mr. A. C. Jones 
describes a new fungus which he has often found in the sputum of 
phthisical persons when the pulmonary tissue is breaking down. The 
principal features of the fungus are that it overgrows the elastic fibres, 
around which it is seen as a complete investment formed of little club- 
shaped elements. These club-shaped elements are also to be seen in 
rosette-like aggregations, having some resemblance to Actinomyces- 
grains. From the club-shaped elements there may develope a mycele 
exhibiting transverse partitions. Another feature is the presence of 
spicules much like those of barley. 
Protophyta. 
£. Scliizomycetes. 
Resistance of Bacteria to Pressure combined with a High Tempe- 
rature.:]: — As the result of a series of experiments, Dr. E. v. Freuden- 
reich states that certain bacteria will resist a carbon-dioxide pressure of 
80-90 atmospheres, and a pressure of 60 atmospheres in oxygen, com- 
bined with an elevation of temperature to about 65° C. 
Assimilation of Atmospheric Nitrogen by Microbes.§ — M. S. 
Winogradsky makes a preliminary communication relative to the 
assimilation of gaseous atmospheric nitrogen by micro-organisms, the 
first intention of the author being to ascertain if there exist in the soil 
specific fixative microbes. The procedure adopted was that of methodic 
cultivation carried out in a medium strictly devoid of nitrogen but con- 
taining a fermentable substance, a solution of mineral salts and sugar. 
The salts were specially prepared, and the dextrose did not contain a 
* Ann. de Micrographie, v. (1893) pp. 329-33. 
t Centralbl. f. Bakteriol. u. Parasitenk., xiii. (1893) pp. 697-701 (1 pi.). 
X SB Naturf. Geaell. Bern, 1892 (1893) pp. viii.-x. 
§ Comptes Rendus, cxvi. (1893) pp. 1385-8. Cf. this Journal, 1893, p. 357. 
1894 H 
