1904] CURRENT LITERATURE 305 
leaves, and twelve types are recognized and discussed. The concluding chapter 
contains a summary and some concluding remarks. 
As might be supposed the author inclines to teleological views, holding that 
plant structures harmonize with their environment and even tend to become 
modified in advantageous ways. The volume will have somewhat the function 
of an encyclopedia, and it is therefore to be regretted that there is no index to 
genera.—H. C. Cow es. 
MINOR NOTICES. 
A REVISED EDITION of CouLTeER’s Plant Structures,3 an elementary text-book 
of plant morphology, has appeared, the first edition having been published in 
1899. There are numerous changes that deal with misstatements, illustrations, 
changed points of view, and recent discoveries so far as these have to do with the 
purpose of so elementary a book. Such subjects as mycorhiza, the development 
of the sporophyte of bryophytes, and the endosperm of angiosperms have been 
rewritten, and the topic of “double fertilization’’ introduced. 
Heten Eastman‘ has written a fern book for amateurs, which is intended to 
be “an illustrated field-book that shall be concise, inexpensive, and adapted to 
the needs of the beginner.” The photographs for the plates are said to have 
been “produced by an entirely original process.” ‘The general purpose of such 
$ is to be commended, in so far as they stimulate interest in plants or help 
to make observation somewhat definite. Doubtless the present book will serve its 
Purpose well in New England.—J. M. C. 
ATKINSON 5 has 
( published an outline of his lectures on plant ecology as 
delivered 
plant organization, plant organs are considered, then 
cal factors, vegetation types, migration. Several lectures on the various 
formations 9F societies conclude the series.—H. C. Cow es. 
NOTES FOR STUDENTS. 
— in a short address on the control of sand dunes in the 
) tates and Europe, gives an account of the European methods of dune 
and “atrol, and makes Suggestions for similar work in this country.—H. C. Cowles. 
IC 
ix+ — Joun M., Plant Structures. Second edition revised. 12mo. pp. 
* P&S. 289. New York: D. Appleton and Company. 1904. 
of Piero HELEN, New En 
1904, ng the Species, 
gland ferns and their common allies; an easy method 
T2mo. pp. xix+161. Boston: Houghton, Mifflin & Co. 
5 Aten. : 
Rees ck ae G. F., Relation of plants to environment (or plant ecology). Out- 
and 1904, Of lectures delivered in the Summer School of Cornell University 1903 
6 PP: 67. Ithaca Publishing Co., Ithaca, N. Y. 
Nat. Geog. Mag nS, Controlling sand dunes in the United States and Europe. 
* 1904: 43-47. 
