648 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
media, that the growth of fungi therein diminishes according to the 
increasing concentration and finally ceases altogether. The fungi em- 
ployed were Aspergillus niger, Penicillium glaucum, and Botrytis cinerea, all 
of which gave analogous results. These were grown on solutions of 
varying concentration of glucose, glycerin, nitrates of potash and soda, 
chlorine, &c. In the glucose experiments 0*6 per cent, of inorganic 
salts was added, and in the saline media 0 • 5 per cent, glycose was used 
as well. 
Thrush-fungus.*— The thrush-fungus, says M, E, Laurent, has been 
classed as an Oidiurn and as a Saccharomyces ; but it is neither a true 
Oidium nor is it an alcoholic ferment. The author cultivated specimens 
of thrush-fungus, obtained from hospitals in Paris and at Brussels. 
These cultivations presented sparsely septate filaments, 3-6 /x in diameter, 
commingled with pseudo-saccharomyces which were from 4 ’5-6 /x long, 
and 2*5-4 /x broad, In slightly acid saccharated liquids (sugared beer- 
wort), only the oval pseudo-yeasts were developed. They possessed no 
fermentative powers, and after the lapse of a month in a liquid containing 
5 per cent, of sugar, only 0 • 6 per cent, of alcohol per volume was found. 
Hence they resemble the pseudo-yeasts of Cladosporium herbarum (JDema- 
tium pullulans). Another characteristic assimilates the thrush-fungus to 
the pseudo-yeasts. When cultivated on gelatinized beer-wort, it always 
developes quite dense spheroidal colonies, in connection with filaments 
from the ends of which they are propagated. In liquid media such 
colonies soon become free, and hence the connection between these and the 
filaments is not so apparent. Under no circumstances was the develop- 
ment of endospores observed. The author suggests that this fungus 
should be named Dematium albicans. 
Himalayan Uredinese.f— A second instalment of Dr. A. Barclay’s 
monograph of the Uredineae of the neighbourhood of Simla is devoted to 
the genus Puccinia. The following new species are described : — P. Posse 
on Posa macropluylla , P. Saxifragse ciliatse on Saxifraga ligulata var. 
ciliata, P. Poscoess on Poscoea alpina , P. Arundinellse on Arundinella 
setosa and A. Wallichii, P. Anthistirise on Antliistiria anathera , P. Ghryso- 
pogi on Chrysopogon gryllus, P. Caricis filicinse on Carex filicina. 
Dr. Barclay further describes J the following three new species from 
the Simla region : — 
(1) Gymnosporangium Cunningliamianum. The teleutospore-form 
occurs on Cupressus torulosa, the secidium-form on the wild pear, Pyrus 
Pasliia. The genetic connection between the two was determined by 
cultivation. 
(2) Puccinia Collettiana, parasitic on Pubia cordifolia ; spermogones, 
uredospores, and teleutospores ; but no secidiospores were detected. The 
author believes the spermogones not to be sexual organs, but the so-called 
spermatia to be a form of conid. 
(3) Chrysomyxa himalense, parasitic on Rhododendron arboreum. The 
* Bull. Soc. Beige de Microscopie, xvi. (1889-90) pp. 14-8 (2 figs.). 
t Journ. Asiatic Soc. Bengal, lviii. (1889) pp. 232-51 (3 pis.). Cf. this Journal, 
1889, p. 790. 
t Scient. Mem. by Med. Officers Army of India, part v. (1890) 8 pp. and 3 pis., 
5 pp. and 1 pi., 7 pp. and 2 pis. 
