

COVERS FOR [THE NATURALIST. 

Handsomely stamped cloth covers for use in binding THE 
Natura.ist have been prepared by the publishers, and will be 
sent, postage paid, on receipt of price, 50 cents per volume, 

COVERS FOR VOLUME XXIV. (1890) NOW READY. 

FERRIS BROS., PUBLISHERS, 
N. E. COR. SEVENTH AND FILBERT STREETS, PHILADELPHIA. 

Synopsis of the Families of Vertebrata. 
BY FROR: E- D: COPE 
This article, which was printed in the AMERICAN NATURALIST 
for October, 1889, has been issued in separate form by the 
publishers, for the use of lecturers, instructors and others who 
may have use for it, and will be sent by mail, postpaid, on 
receipt of 25 cents. 
FERRIS BROS., Publishers, 
N. E. Cor. Seventh and Filbert Sts., Phila. 

NOTICE TO CONTRIBUTORS 
AMERICAN NATURALIST. 
Send Contributions to the EDITORS ONLY. 
Send to the PUBLISHERS ONLY: 
All Orders for Extra (or Reprint) Copies. 
All Proofs of Texts and Engravings. 


NOTE.—AIll orders for reprint or extra copies must be given 
before the number containing the article goes to press; 
otherwise none will be furnished. 
a 

