950 Progress of Botany in the United States in 1880. [ December, 
Feb. 2, 1880, and afterwards published in a pamphlet of forty- 
six pages, enumerates nearly g00 species. Localities and habitat 
are given for the greater number of the species. One new spe- 
cies, Agaricus tridens Moore, from a drift 400 feet below the sur- 
face, is described. 
valuable article on “ The White-grub Fungus,” appeared in 
the June number of the American Entomologist. The writer (C. 
V. Riley) appended a list of papers containing references (mostly 
popular) to this fungus. Two wood-cuts accompany the article. 
Professor Prentiss’ paper in the August and September NATU- 
RALIsT, on the “ Destruction of Obnoxious Insects by means of 
Fungoid Growths,” recorded the results of a series of experiments 
with yeast as an insecticide. The results were plainly adverse. 
Professor Burrill’s paper on “ Anthrax of F ruit-trees,” read be- 
fore the Boston meeting of the American Association for the 
Advancement of Science, did not reach the public, through the 
tardy publication of the “ Proceedings,” until about a year later. 
Abstracts appeared in various journals, one of which, viz., that in 
the American Monthly Microscopical Fournal, is selected for none 
here. The disease called blight is held, by Professor Burrill, to 
be due to “a living organism which produces butyric fermenta= 
tion of the material stored in the cells, especially those the 
liber. This organism is allied to, if not identical with the butyn® 
vibrione of Pasteur, and the Bacillus amylobacter of Van Tieghem. 
Experiments were made by inoculating healthy trees, and a 
results appeared to sustain the theory of the bacterial nature # 
the disease. The bacteria observed were described, and carefu 
measurements given. 
Century rv of Ellis’ now well-known “ North American Fung}, 
was issued during the year. | 
6. Alge. Francis Wolle’s paper on “ Fresh-water Alga, : 
April Bulletin of the Torrey Botanical Club, contained a “list 
upwards of one hundred plants, at least ninety of which are ne ; 
to the United States, and of which eighteen were wholly 
known.” The new species described are the following: SP — 
ayga saccaia, Tolypothrix bombycina, Euastrum Donnellt, : . 
formosum, Micrasterias Kitchelli, Staurastrum aes o 
_ Nova-Cesaree, St. tricornutum, St. macrocerum, St. fascicul sig 
St. subarcuatum, St. comptum, St. pusillum, Arthrodesmus fra viiad = 
Pleurocarpus tenuis, Glogonium Donnelli. In the August BNC” 
’ in the 
