152 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
kinetically, the daughter-nuclei dividing in the same manner, to furnish 
a nucleus for each spore. Nuclear division probably continues within 
the spore after the formation of the spore-wall. The wall of the peri- 
thece is formed from surrounding filaments. 
Eurotiopsis Gayoni.* * * § — M. J. Laborde describes, chiefly from the 
physiological side, a new mould which was found growing on starch. 
The fungus was discovered from the presence of red patches resembling 
those produced by Micrococcus prodigiosus. Microscopical examination 
disclosed a red-coloured mycele ramifying through the starch, which in 
its turn was stained by the pigment secreted by the mycele. Morpho- 
logically, the new fungus belongs to the Ascomycetes, and it is denomi- 
nated Eurotiopsis Gayoni sp. n. Besides the mycele and the red pigment, 
other facts noted are that reproduction is aerial, and the presence of 
peritheces and conids. Eurotiopsis Gayoni is cultivable on artificial 
media, Baulin’s fluid being especially suited to it. Certain carbo- 
hydrates, such as ethylic alcohol, glycerin, mannite, and lactose, are 
utilisable, while saccharose and inulin are not. 
The experiments, which are numerous and physiological, show that 
Eurotiopsis is a most perfect example of the class of fungi connecting 
on the one hand the moulds which are pure agents of combustion, with 
the yeasts whose chief function is to effect the alcoholic fermentation 
of sugar. This ferment function seems highly elastic in Eurotiopsis, 
as it was found to vary from 1 to 10. 
Consumption of Acids by Yeasts.f — Herr J. Shukow finds that 
yeasts are capable of taking up and using citric, malic? 5 tartaric, and 
succinic acids : citric acid is that which is most easily assimilated, then 
malic, tartaric much less so, and succinic least of all. Different races 
of yeasts use up different quantities of acid under the same conditions. 
The intensity of the consumption depends on the presence of nitrogenous 
substances and of ash ; the richer the medium is in these substances, the 
better it is for the nutrition of the yeasts, and the more acid they can 
consume. 
Fusicladium. — Dr. B. Aderhold J identifies the various parasitic 
species of Fusicladium as the conidial form of corresponding species of 
Ventura. F. dendriticum , common on the leaves of the apple, is referred 
to V. clilorospora , while the ascoform of F. pirinum , parasitic on the 
leaves of the pear, is erected into a new species under the name Ventura 
pirina. The identity was, in both cases, established by inoculation. 
The same author § describes a new species, which he names Fusi- 
cladium Betulse, parasitic on tbe leaves of several species of Betula, and 
identifies it as the conidial form of Ventura ditricha f. Betulae. 
Coleosporium Pini.ll — Prof. B. T. Galloway gives details of the life- 
history of this fungus, and of the injuries inflicted by it, resulting in a 
casting of the leaves, on Pinus virginiana , tbe only pine which it attacks 
in America. The full development of the fungus lasts through twelve 
* Ann. Inst. Pasteur, xi. (1897) pp. 1-43. 
t Centralbl. f. Bakteriol. u. Porasitenk., 2 te Abt., ii. (1896) pp. 601-12. 
X Landwirth. Jahrb., 1896, p. 875. See Bot. Centralbl., lxix. (1897) p. 247. 
§ Centralbl. f. Bakteriol. u. Parasitenk., 2 te Abt., ii. (1896) pp. 57-9. 
|| Bot. Gazette, xxii. (1896) pp. 433-53 (2 pis. and 3 figs.). 
