1886. | BOTANICAL GAZETTE. 317 
Again thanking you for your hearty commendations of my course in hap 
tion to this subject, and assurin eg gt that I shall continue to do all i 
power to further the work, I re —— respectfuly, 
n J. Peageraerni insikiaitinde: 
Department of Agriculture, Woks D. ee Oct. 1886, 
Second blooming of Salix humilis. 
On the 25th atl ope bo while ore the leaves of some willows, 
I came across a milis Somey ie s full of Ss artally et oy Se stami- 
nate catkins mi pre fally developed I vis the pla o weeks 
later and about Shé-beit of the catkins had. iene’: “the other half had — 
up and wit ater ed. OniveR A. Far 
Phenix, Mich. 
CURRENT LITERATURE. 
Plant Analysis : ae on ar “acon By G. Dragendorff, Ph. D. 
Translated from the Germ see ng y G. Greenish, F.I.C. J. H. Vail & 
Co., New York 188 4, 8vo0 
The study of ml conte a most important part of a -_ Hague iA © 
of plants, pins a a great impetus from the publication of this Both in 
its original form and its English version it at once attrac posse tion for its 
completeness, compactn ess and epic hnrere to the Reine a the student. 
ion is nd has all the value 
a 
tudy of chemical botany is now receiving more ere than hereto- 
ore, and merits, and is likely to obtain, a larger place yet the curriculum 
of botanical science, being Doig hbpaelig ne as a part of "the course in veg- 
etable physiology, aa ev ore s oe ca botany. 
is change can be chiefly Sane to t ths ae pray of Dr. Dragendorff’s work, 
for although it has been befere the public but a short time, it nevertheless 
r - 
ain amount e of chemistry, chemical manipulation, and 
{. the microscope, is presupposed in the pupil, but having this, the work will 
be found as clear and simple as mplex nature of the ct permits. Its 
a e ach c ot fail to stimulate the pupil to original in- 
vestigation, for while the limits of the w would only permi introduc 
tio e important constituents of plants, yet he tu e alert 
for less nape or unknown ¢ compou unds, which are to be worked out from infor- 
ation gathered elsewhere, p iterature aiding him in his 
resear 
a 
The fact that the work is specially adapted for the fag ti of chem- 
Poy problem ms from a Pepeig ig point of view, makes no ~~ it at this 
time peculiarly fitt as Miss Martin’s recent ‘articles oe the subject have un- 
doubheaty pr A ae rikoowits of our readers in this Tissitiod.”: 
General Biolo B be cpeicg = see Ph. D., and Edmund B. Wilso 
Ph. De. Part ‘, 8° pp. 193. Henry Ho It & Co, Now York, 1886. 
Ameria Science Seri 
tae is always welcome, especially when it deals with 
methods a laboratory work. Every respectable teacher believes in laboratory 
'y Sod teacher follows no guide sg eho re has notions of 
his oer as 1s the a oiler and details of presentation. The act that a con- 
stant succession of laboratory guides is appearing shows that F tsachiova differ as 
