FERNS 
A MANUAL FOR THE NORTHEASTERN STATES 
WITH ANALYTICAL KEYS BASED ON THE 
STALKS AND ON THE FRUCTIFICATION 
With over two hundred illustrations from original drawings and photographs 
By CAMPBELL E. WATERS 
302 pages, square 8vo. Boxed, $3.00 net; by mail, $3.34 
This book is thoroughly authoritative, and is written in popular style. 
It covers all the ferns in the region embraced either in Britton’s or in Gray’s 
Manuals. 
«¢ This book is likely to prove the leading popular work on ferns. No 
finer examples of fern photography have ever been produced. Dr. 
Waters brings to his work fifteen years of experience in field and herbarium 
study, and the book may be expected to prove of permanent scientific value, 
as well as to satisfy a want which existing treatises have but imperfectly 
filled.’’—Plant World. 
‘¢ For all who study or wish to study our native ferns Dr. Waters has 
prepared a book which is sure to prove both helpful and inspiring. 
Especially charming and significant are the views showing typical habits 
and habitats.’’—Zhe American Naturalist. 
‘“«There could hardly be a better book for those interested in the 
subject.’’— Boston Literary World. 
OUR NATIVE FERNS 
AND THEIR ALLIES 
WITH SYNOPTICAL DESCRIPTION OF THE AMERICAN PTERIDOPHYTA 
NORTH OF MEXICO 
-By LUCIEN M. UNDERWOOD 
PROFESSOR IN COLUMBIA UNIVERSITY 
Revised. xii+156 pages, 12mo - - - $1.00 
«The elementary part is clear and well calculated to introduce begin-_ 
ners to the study of the plants treated of. The excellent key makes the 
analysis of ferns comparatively easy. The writer cordially commends the 
book. It should be in the hands of all who are especially interested in the 
vascular cryptogams of the United States.’’—Budletin of the Torrey Botan- 
wcal Club, N. F. 
Henry Holt and Company 
29 West 23d Street, New York 
