402 BOTANICAL GAZETTE [MAY 
The last section on “General observations” is unique. It consists of 
about 30 pages of advice to students and investigators. It is well written, 
interesting, and stimulating. It is to be regretted that it should have been 
published where it will necessarily have relatively so small a circle of readers. 
bs se running through the section may be indicated by some of the head- 
s “On subsidiary studies,” “On beginning work thoughtlessly,” “On 
paclie of experiments, other people’s, one’s own,” “On publication,” “On 
keeping one’s own counsel,” “On sharing credits,” and “On attending meet- 
ings and keeping up membership in societies, and on being generally public 
spirited and helpful in science.” An excellent index is provided.—R. E. 
BUCHANAN. 
Geography of plants 
In a compact volume, Harpy? has given a comprehensive review of the 
vegetation of the world in very readable form. Maps of such climatic factors 
as rainfall and temperature, as well as of the vegetation itself, are upon a 
small scale, but seem very accurate, although necessarily lacking in detail and 
expressing a much greater rigidity than obtains in nature. The general 
characterization of the vegetation is fairly accurate, although one is often 
at a loss to know just what genera and species are intended on account of 
the rather complete absence of scientific names. The few scientific terms 
employed are so lacking in accuracy as to shake one’s confidence in the facts 
presented with which he is not already familar. Irregularities in spelling and 
capitalization might be overlooked, but to designate the long-leaved pine on 
cedars” to the genus Cedrus is certainly unpardonable. Such inaccuracies 
in seni gies together with an entire absence of citations of the sources of 
ta, will prevent the book being used by advanced classes, although it will 
ae be found useful for imparting general impressions and in sketching 
in broad outline the vegetation of the various continents.—Gro. D. FULLER. 
MINOR NOTICES 
Practical botany.—Martin’s textbook entitled Botany for Agricultural 
Students has appeared in a second edition and with a new titles The gener 
purpose of the text was stated in a previous review. In the new edition por- 
tions of the text have been re-written, to correct errors and to increase clear- 
ness, but the chief changes occur in the treatment of heredity and evolution, a 
chapter on variation being added. The matter is well presented, clear in 
style and organization, and is certainly well adapted to its constituency.— 
J. Pas © 
M. E., The geography of plants. 12mo. pp. xix+327. figs. 115+ 
oes: ‘Charenton oe hoo 
3 Martin, J. N., Botany with —_ applications. 8vo. pp. xiit604- 
Sigs. 490. ‘New York: ies & Sons. 1920 
4 Bor. GAZ. 68:308. 19109. 
