8o 
THE AMERICAN BOTANIST 
each sheet also contains photographs of mature leaves and of the 
lower part of the trunk, the latter large enough to show the bark- 
characters plainly. Accompanying each plate is seA'eral lines of 
text, giving information about the range of the species, its size, 
bark, leaves and wood characteristics. The photographs are 
among the best that have appeared and form a very instructive 
sefies. Thus far, 24 sheets have been issued, the price of the 
set being one dollar. 
A little volume entitled "Elementary PlantPhysiology " by Prof. 
D. T. ]\IacDougal has just been issued by Longmans, Green & 
Co. This replaces the same author's '"Experimental Plant Physi- 
ology"''' which was issued in 1895 and is now out of print. The 
present volume follows essentially the same lines as the earlier one, 
being designed to meet the needs of beginners in physiological bot- 
any. The experiments suggested are such as can be made with 
the simplest apparatus and there are 108 illustrations. One of 
the best testimonials to the usefulness of this work is found in the 
rapid sales of the first volume. 
]\Irs. Parsons' new edition of "According to Season/' might 
have borne any other name, as far as its appearance connects it 
with the earlier volume. The original ''According to Season" was 
a tiny volume without illustrations but this new one has grown to 
a size uniform with the author's '"How to Know the AA'ild-Flow- 
ers" and ''How to Know the Ferns" and becomes a most service- 
able book for the lover of nature. There are now thirty-one col- 
ored plates reproduced by color photography which are very life- 
like representations of the plants. Several new chapters have 
been added and each paragraph now has a margined title. The 
sub-title of the volume is "Talks about the flowers in the order of 
their appearance in the woods and fields," but one who reads the 
book will find that birds and many other things receive a share of 
attention, the whole making a very attractive and readable volume. 
It is published by Charles Scribner's Sons at $1.75 net. 
