Botany and Zoology. 427 
of the Bussey Bulletin contains, we call attention here only to 
Prof. Farlow’s short article, which refers to some of the various 
questions and problems he has had to deal with during be past 
year. They mainly relate to the Black Knot of Plum trees, which 
was the subject of a former paper; to the American Grape ne 
mildew (Peronospora viticola), and a disease caused by Uncinula 
spiralis the conidial form of which is genres: undistinguishable 
rom the notorious Oidium Tuckeri ; to the #umago of Orange 
and Cae trees, in which it t appears that the mischief produced 
is owing to 0a wooly p lant-louse, upon the excretions of which, or 
the exudations of the leaf caused by the punctures, the fungus i is 
thought to live; and, final wk there are some notes supplementary 
to Prot Farlow’s s memoir n the Onion n-smut. It seems that this 
but is A all appearance Phe ae sa s U. magica, found on an Italian 
car 
It is well that we have in this country an institution which furthers 
investigations of this sort, and intends to educate a sence of 
teachers capable of u undertaking them 
7. Flora Brasiliensis.—The 70th fascicle, a large one, with, 70 
plates, is tilled with Bentham’s pita ether ‘of the Mimosee, and 
concludes the sixteenth volume. The 71st contains the small 
orders, Ochnacew, Anacardiaceew, Sabiacew, and Rhizophoracee, 
by r. Engler. As to Ochnacee, the author confirms Planchon’s 
idea, aes in 1862 but not anywhere acted upon, that this 
order emb Ppergicdg 4 and he insists ak it is allied to 
Dillen iacee oi ap t to Rutacew. For the large genus of the 
sing op pete following pale, replaces Schreber’s long received 
na Gomphia by Ouratea of Aublet, and he appears to have 
in pes identified Aublet’s oda specimens. In dAnacardiacee 
the genus Lithrea of Miers is reinstated. Brazil has but one species 
ocky M 
tains ss the jpice Popes of the Genhogiadl Survey of 
Canada for 1875-76, issued in 1877, we find an interesting narra- 
tive, by Professor John Macoun, of a botanical exploration from 
ca 
t to the Peace and Athabasea Rivers east of the Rocky 
Mountains, and t Canada, to which is appended a full 
Catalogue of the Plants collected, or known Mr. Macoun t 
occur on this range, with a careful indication of their cre 
i acea ‘the continent. A very useful and er 
9. Sketch of the rar of the Nicobar Islands ; Tne: 
thon of Burmese Palms ; Vontributions toward a knowledge of the 
