Botany and Zoology. 83 
zooglea grown from it in cultivation in hay and potato infusion. 
The name of this destructive bacterium, given by Professor 
Burrill, the discoverer, was Micrococcus amylovorus, which, ‘ by 
a typographical error” was in a reprint of the author’s original 
paper “‘made to read i amylivorus, a mistake which has ‘been 
copied into other works,” says Dr. Arthur. We should say that 
the latter was rather the correction of an original mistake, which 
should have been accepted with thanks, unless indeed the bacteri- 
ologists are super grammaticum and prefer to write carnovorus 
and insectovorus and graminovorus, which is not likely. 
I. Freyn, of Prague, has recently published several articles on 
Ranunculus, and is engaged in a complete elaboration of the 
European species. In furtherance of his work he solicits ex- 
changes with American botanists. 
Acta Horti Petropolitani, tom. ix, fase. 2, is just received. The 
article which most interests us is on the plants of the Commander 
Islands, i. e., Bering Island and Copper Island, next to the coast 
of Kamtschatka, being a list of the species collected by two Rus- 
sian Doctors, in 1879 ‘and 1881. To our surprise the Bryanthus 
Stelleri is not among them. Dr. Herder gives a complete enum- 
eration and determination of George Forster’s Icones Plantarum 
in itinere ad insulas maris australis collectar um, cum tabulis ceneis 
et duobus pictis, two volumes in folio, of mich the Petersburg 
Garden possesses an unique copy. The volume also contains the 
younger Regel’s fine Monographia generis Hremostachys, with 
ten large plates. 
Catalogus Systematicus Bibliothecee Horti Inperialis Botanici 
Petropolitani, a new edition, by Dr. Herder, forms a large 8vo 
volume of 510 pages, with complete indexes; a valuable volume. 
Sir Joseph Hooker’s Primer of Botany has been issued in a 
third edition, revised and considerably enlarged, especially by sec- 
tions on the "general nature and work of plants, on their tissues, 
their food, assimilation, etc. The primer now has 143 pages, about 
twenty more than in the second edition. 
Mr. N. L. Britton, of the Torrey Herbarium, has contributed to 
the Bulletin of the Torrey Botanical Club, vol. xiii, no. 11, a 
Preliminary List of the North American species of Cyperus, with 
descriptions of new forms, a recast of the genus, with two new 
species, C. Halei and C. Wrightii, and several varieties. A. G. 
3. Bulletin of the American Museum of Natural History, vol. 
I, No. 7, Central Park, New York.—The number for July con- 
tains the following memoirs : Description of a Squirrel, Spermo- 
philus tereticaudus of Arizona, E. A. Mnans; Life history of 
Amblystoma opacum, and on Scaphiophus Holbrooki Col., N 
Pike; Reyised list of birds of Massachusetts and on Colinws 
Ridgwayi of Arizona (with a fine colored plate), J. A. ALLEN. 
