1892. | Current Literature. — 265 
In THE report of the Michigan Horticultural Society for 1891, Mr. 
A. A. Crozier gathers a host of opinions relating to the mutual influence 
of the stock and graft. The literature quoted bears on the various 
often conflicting and some of it doubtless untrustworthy, Mr. Crozier 
has done well in collecting what has been written on the matter, as 
the first step towards his experimental study, which we trust will shed 
more light on this interesting topic. 
Dr. Rotanp THaxTER publishes in the Proceedings of the Ameri- 
can Academy of Arts and Sciences a paper which “includes the addi- 
tions which have been made during the season of 1891 to the previous- 
ly recorded species of North American Laboulbeniacee, a small num- 
ber only of new forms being reserved for later description for lack of 
sufficient material. Three new genera are represented,—Ceratomyces 
by two species, Corethromyces and Acanthomyces each by a single 
pean form, contributes ten species, nine of them new; while, lastly, 
the genus Laboulbenia adds sixteen species, thirteen of which are un- 
described. In all thirty species, by which the sum total of seit 
forms is increased to forty-nine; + <7’ Fhe contribution of aquatic 
forms is of especial interest, the genus Ceratomyces forming adisti — 
departure from previously described generic types.” The weed ees 
arefull, but without figures. 
Ass Piiceiit Gk the A g Swiltueal ae p : t Station of Ten- 
nessee, Prof. F, Lamson-Scribner has issued the first part of a manual 
of the grasses of Tennessee.! “This first part is designed for the 
farmers and agricultural students of the state; affording the former a 
andy reference book for general information as to the general char- 
acter and quality of our grasses, and giving the latter a concise 2° 
Count of the characters of the grass family, together with a key for we 
_ termining the tribes and genera into which the species are classified. 
a ‘Th part two it is proposed to fully describe, and, so far as por 
B ~ illustrate all of the grasses of thestate. Part one 1s introductory 
0 this.” 
Stan SON- Screen, F.—The grasses of Tennessee. Bulletin of Agric. Exp. 
tion of the Univ. of Tenn., vol. v., no. 2. 8vo. pp: 30-113. Apr., 1992. 
Vol. XVII.—No. 8, 
