SUPPLEMENT. 



The series of 1103 Fossil Organisms, described in tlie pre- 

 ceding pages, represents well the prominent and important forms 

 of life in the several Geological Periods. The range of the 

 specimens — as will be seen by a glance at the geological and 

 zoological summary given npon page 170 — is very great, and is 

 ample for the fullest purposes of illustration. 



Tlie great Glyptodon, Dinotherium, Mastodon and Diproto- 

 don, illustrate the huge dimensions attained by animals in geo- 

 logic times. 



But there are instances where it is desired to make a still 

 further display, and add an'impressive feature in the centi-al area 

 of a large Museum Hall. To meet this reqiyrement we propose 

 the four monster specimens — the Megatherium, Elephas Ganesa 

 (Himmalaya Mammoth), Colossochelys and Plesiosaurus — which 

 are described and ligui-ed in the following pages. 



Their appearance is stately and imposing. These four speci- 

 mens — two of tliem with pedestals as shown in the cuts — will be 

 added to the previous series for an additional sum of $800.* If 

 ordered apart from the series (by institutions seeking to orna- 

 ment their present Museum Halls), they will be furnished for 

 the sum of $840, — or they will be sold singly at the prices stated 

 for each. The area occupied by these four monsters may be 

 estimated by the dimensions appended to the description of each. 



*If desired we willjsend a man to mount the latter three of these casts in 

 the Museum Hall (and to give information about mounting the Megatherium) 

 for his railroad fare and hotel expenses. 



