34 BOTANICAL GAZETTE. 
of the distribution of some of the thallophytes, especially as affected by alti- 
tude, it is also interesting. In general it may be said that the thallophytic 
flora turns out to be similar to that of the Adirondacks an i d 
arctic flora of Europe. Twenty-three alge are enumerated, and about one hun- 
secondary forms. The following new species are described : Propolis cireularis, 
Sticta Tsuge, Cylindrosporium Get, Cercospora Pyri, Ramularia Ovalidis. The pri- 
mary object in visiting the region was to study the occurrence and distribution 
- of the Peridermia. ree species were found. e first, P. abietinum (P. deeol- 
Botanical Micro-Chemistry, an Introduction to the Study of Vegetable Histology, 
. by V. A. Poulsen. Translated with the assistance of the author and con- 
‘Trelease, and his thorough acquaintance with every detail of laboratory work 
make his additional notes (always signed with his own initials) not the least 
luable part. A complete index adds to one’s com ‘ort, and we bespeak for 
this little book the careful attention of all students of Vegetable Histology. 
The True Grape Vines of the U.S. and the Diseases of the Grape Vines. By Dr. 
Geo. Engelmann. Reprinted from the Bushberg Catalogue, pp. 9-20. 
e systematic arrangement of N. Am. grape vines is as follows: lL. 
dah sedi: cose, shreddy bark and forked tendrils, and II. Musca- 
dine grapes, = aya adhering bark and simple tendrils. The second divi- 
ic ns only V. : 
divided into two groups: A, those with more or less continuons tendrils, in- 
eluding only V. Labrusea, and, B, those with intermittent tendrils. Group Bis — 
