790 SUMMARY OF CURRENT RESEARCHES RELATING TO 



ruptus et sporidia emittens. Pseudoparaphysis lateralis, simplex, non 

 articulata, curvata, nonnuUis appendiculis tuberculiformibus prsedita. 

 1 species. 



Heimatomyces. Perithecium apice in cornu lateraliter pertusum 

 productum. Pseudoparaphysis lateralis uniarticulata. 1 species. 



Cotemporaneous action of different kinds of Saccharomyces.*— It 

 has already been shown, says M. J. Vuylsteke, by Hansen, that in a 

 mixture of low ferments and wild Saccharomyces the proportion of the 

 cells of the latter was always greater at the end of fermentation than at 

 the beginning. The comparison was made with the low yeasts 

 Carlsberg i. and Carlsberg ii., with S. Pastorianus i. and iii., and 

 S. eUipsoideus ii. The author's experiments were made with one high 

 and two wild ferments, S. cerevisiae i, and S. Pastorianus i. and iii. The 

 results obtained by the author were as follows : — a greater infection at 

 the end than at the beginning of fermentation was not always found with 

 S. cerevisise i. and S. Pastorianus i., but the law laid down by Hansen 

 for the low and wild species was found to hold good for S. cerevisiae i. 

 and Pastorianus iii. 



The method adopted by the author in his experiments was to take 

 vessels holding about two litres, and fill them two-thirds with hopped 

 wort of a density of 14 per cent. Balling. These vessels and contents 

 were then sterilized more or less, by heating them for two or three hours 

 to 7O°-90° C. From the scum obtained by inoculating with pure 

 cultivations of the different yeasts, a certain quantity was pipetted off at 

 the beginning of fermentation, and also at the end. 



The proportion was calculated by two methods, the first of which was 

 based on direct enumeration, and the second on the formation of 

 ascospores. The second method is compulsory when a Burton or 

 Carlsberg i. ferment is used, since these latter tend to assume the 

 elongated form during the principal fermentation. In both cases the 

 method given by Hansen was adopted. 



Himalayan Uredinese.f — Dr. A. Barclay describes sixteen species of 

 Uredinese from Simla (Western Himalaya). The following are new : — 

 j^cidium Saniculse on Sanicula europsea (probably connected genetically 

 with Puccinia Pimpinellse), Puccinia Fragariae on Fragaria vesca, JEcidium 

 Jasmini on Jasminum liumile, Monosporidium Eupliorhise gen. et sp. nov. on 

 Euphorhia cognata, M. Andrachnis on AndracJine cordifulia. Monospori- 

 dium is characterized by the spores being abstricted in rows, but behaving 

 in germination somewhat like teleutospores. The germ-tube produces at 

 its extremity a secondary non-deciduous spore without the intervention 

 of a sterigma. 



Rostrupia, a new genus of TJredinese.^ — Prof. G. v. Lagerheim 

 identifies Puccinia triarticulata B. & C. with P. Elyrni West., and estab- 

 lishes it as a type of a new genus of Uredinefe (Bostrupia) with the 

 following diagnosis : — Sori uredosporiferi explanati, ureodosporis apice 

 pedicelli solitariis ; sori teleutosporiferi explanati ; teleutos^Dorse sim- 

 plices, 2-pluries septatfe (rarissime uniseptatge), quoque loculo porum 

 singulum germinationis gerente. ^cidia adhuc ignota, veresimiliter (ut 

 in geueribus Uromyces et Puccinia) pseudoperidio iustiucta et paraphysibus 



* Ann. de Microgr., ii. (1889) pp. 190-218. 



t Jouin. Asiatic Bo(\ Bengal, Ivi. (1887) pp. 350-75 (4 pis.). 



I .Journ. de Bot. (Morot), iii, (1889) pp. 185-9 (I fig.). 



