468 BOTANICAL GAZETTE [JUNE 
Storage, presented by the editor, there is an account of Cold storage by L. 
C. Corbet, and of Refrigerator cars by J. H. Hale. 
Aside from the taxonomic presentation of many genera, perhaps the most 
interesting articles to botanists are Zerato/ogy, presented by C. R. Barnes; 
Trees, presented in all their aspects by various writers; and Wnter protection, 
escribed and illustrated by W. C. Egan and B. M. Watson. 
Professor Bailey is to be congratulated upon the completion of this work, 
especially upon the peculiar features it possesses in comparison with the 
ordinary cyclopedias dealing with horticultural material. Its chief features, 
as they stand out in the mind of the editor, are that it represents a living 
horticulture, rather than a compilation of odds and ends selected from other 
encyclopedias; that it contains synoptical keys that enable the reader to 
name the species; that the leading articles are signed and represent the con- 
tributions of more than 450 persons; and that throughout the whole pre- 
sentation one detects no rigid conception of plant, forms, but feels the drift 
of an evolutionary motive. That such a work should have been begun, so 
_ far as actual writing is concerned, in January 1899, and the last proof read 
December 31, 1901, speaks well for the organizing power and the capacity 
for work of its editor and his staff. The statistics show that the total number 
of entries is 4357; the number of genera described is 2255; the number of 
species fully described is 8793, of which 2419 are native to North America 
: = chi pana M.C. 
_ Physiology in the laboratory. 
‘To ‘STUDY, the plant in action is to become acquainted with the most 
g phase of the science of botany. It is a part of the subject that 
especially to the young student. But to make intelligent progress, 
the more recondite processes without elaborate apparatus, and 
without undue loss of time and check to enthusiasm requires 2 
ok. Even under an excellent instructor a handbook is advan- 
. work that meets the a copeiges for a laboratory manual of 
thet n issued from the press of Long- 
& Co., prepared by Dr. Daniel ne een 4 director of the 
! Garden 
is perspicuous, concise, up to dete; and requires only sioiple 
obtained by most colleges and high schools, and in part no 
The whole ground oF Physiology i is covered : oe and 
r of gases and 
en plants, parasites and saprophytes, respiration, 
T cc orrelation. * 
na set of directions for performing experiments, for 
EL TREMBLY, Elementary plant eeeer New York: 
: 12mo, Lg eliewtness 108 text 
