I Standard Books on Ferns 



J "HOW Ferns GrOW," by Margaret Slosson. With 46 

 4 plates by the author. Large 8vo. $3.00 net, by mail $3.34. 



* t A ™ Iu; * bl f contribution to fern literature in that it not only enables 

 ^ fern students to distinguish different species of mature ferns, but points 

 4 out characteristics of the different kinds at all stages of development, 



* and shows the genetic relations of ferns to each other and to the rest of 

 } T llf f e - i, 6 plate *; nearJ y all reproducing ferns at their natural size, 



* are particularly excellent. Published 1906. 



4 "No one has hitherto devoted, as the present author does, a whole 

 A book to a readable account of the youth of ferns. . With ereat 



* pains she has studied the various metamorphoses and has recorded in 



* good photographs her interesting results. The transformations are all 

 ^^^^^^^ ■"PPl-ented these engrav- 



w.ni^° tai ? 1C K al b ?° ks , e * peciall y> of Iat ^ years, have been remarkable for 

 wealth and beauty of illustration, but even among these "How Ferns 

 Grow is notable The pictures are purely scientific, nearly all are the 

 size of nature, and they are so numerous and so carefully arranged as 



1 fern^S^n^ ^ beaUtifuI b °° k ™Z 



4 "F ems/' byCampbell E. Waters, of John Hopkins University 



2 362 , pp ' square 8vo - ° vcr 200 illustrations from original drawings 

 J and photographs. $3.00 net, by mail, $3.34. 



* . ff A manual for , the Northeastern States, thoroughly authoritative and 

 t ZT7 -I 3 P ° P S Iar St: T le - U covers all the ferns in the reg on em- 

 J bra f d ^ther in Bntton's or in Gray's Manuals. A key based on the 



i on frutification ' ^^^^ 



A Ti "£ he ldeal fern - book - • • • The best fern-book that has aooeared 

 t Mteum atl ° nS SUperb "- Dr - F -H- Knowlton, U S Tationai 

 1 ^he best fern-book— beautiful and scientific."— Critic 

 4 mnfiH h y K° pr ° Ve t he , leadin g Popular work on ferns. . It can 



| n ^ d ercxamples of fern 



% "Ovir Native Ferns and Their Allies." With 



J* bynoptical Descnpt.on of the American Pteridophta North of Mexi- 



* co. By Lucien M. Underwood, Professor in Columbia University - 

 A Revised, xu + 156 pp. $1.00 net, by mail, $1.10. 



^ . "The elementary part is clear and well calculated to introduce he 



« gmners to the study of the plants treated of. The excel en key makes" 



* the analysis of ferns comparatively easv. The writer cordiaHv com 



* "-'"^ 'he book. It should be in the hands of all who are eLdX 



* Henry Holt and Company 



* 29 West Twenty-Third Street. NEW YORK 



