1878.] 3 [Annual Meeting. 
according to the resemblances of the fossils, but keep the dif- 
ferent continental areas separated, we express as nearly as 
possible the present state of knowledge with regard to the 
paleontological history of the earth. 
The North American Collection, as reported upon by Miss 
Washburn, consists as follows : — 
There are on exhibition, 
Genera. Species. Specimens. 
Cambrian é ee ok LOD 208 626 
Silurian os. |. é aot a 240 644 
Devonian : : Se ZOn Bey 1108 
Sub-Carboniferous . ; 95 205 570 
Carboniferous . ; E 77 286 1072 
Triassic . é : ; 35 29 51 
Jurassic . ‘ : : 5 5 40 
Cretaceous : ‘ é 83 154 658 
Tertiary and recent - 305 546 8066 
1040 20384 7834 
These have been derived from the following sources, 
From the Massachusetts Institute of Technology . 2228 
From various sources é : ; ; : enrawe | 
From the C. 8S. Hale Collection. . : : . 1013 
From the Cleveland Collection. 2 ’ . SLA 
7834 
The most valuable parts of this collection are the speci- 
mens of Paradoxides from Braintree, embracing the original 
of this species from the Jackson Cabinet; a fine suite of Cri- 
noids from Mr. J. M. Barnard; the Coal plants of the Rog- 
ers’ cabinet; the large track of the Brontozoon, and some 
fine slabs from Turner’s Falls; the reptilian bones from the 
red sandstone of the Connecticut Valley from Prof. W. B. 
Rogers; the Attleboro’ fossils, and the Tertiary fossils. 
The New England collection of fossils occupies the floor 
cases, and is mounted in the same way, and is included in the 
above report on the North American collection. 
