ADVERTISEMENTS. v 
-FOSSILS 
| Cretaceous Invertebrata and 
Tertiary Vertebrata 
Of S. Dakota, Nebraska, and Wyoming, as 
described by Cope, Marsh, Ta. and Meek. 
Placenticeras, Nautilus, Scaphites, 
Baculites, Teredo, Turtles, Teeth 
and Skulls of the Titanotherium, 
| Oreodon, Mesohippus, Acerathe- 
| rium, Hyracodon, Elotherium, Car- 
Baio __ Hyracodon » nebrascensis. | nivora, etc. 
Green River Fossil Fish ; fifty varieties Fossil Leaves of Dakota Group 
named by Lesquereux. Black Hills Minerals in large variety. Jndian Relics, 
both ancient and modern. Large stock of everything. Send for illustrated 
catalogue with prices. Wholesale and Retail. Colleges, large collectors, 
amateurs, museums, and dealers supplied. 
L. W. SFILWELCL; 
DEADWOOD, SOUTH DAKOTA. 
Mention AMERICAN I NATURAALSE. 
WANTED.. s= Back damba of Je 
Naturauist. November ’83, April 
and December '85, October, November and 
December ’87, all or part of 77. 
Twenty-five cents will be paid for the 
Index to Vol, XII, which was issued with the 
January number of Vol. XIII. 
Persons having any or all of these for 
sale will please write us, stating price at 
which they hold them. 
7 FERRIS BROS., Publishers. 
