64 
of the size of the American Puma or Panther. There are 
also jaws, teeth and parts of the skulls of Hyfenodon, which was 
intermediate in structure between the Hysena and Wolf, and was 
the last of the ancient type of Carnivores. 
The true Carnivora are represented, in Case Q, Sects. 8 and 9, 
by the jaws and teeth of Drepanodon, and by skulls and jaws of 
Dinictes, which were small tiger-like forms. 
"DANA'S MANUAL" SERIES. 
In the ends of the Alcove Cases is arranged a series of fossils 
to illustrate the American portion of Dana's Manual of Geology, 
as far as the collection contains them, or specimens can be ob- 
tained. A large part of the species exhibited in the series are 
the very ones from which the figures were taken, and the others, 
authentic representative specimens of their species. On the label 
will be found the name of the species, and that of its author ; 
the page of the Manual where figured, and the number of the 
figure representing it ; the group of plants or animals to which 
it belongs, and the locality whence obtained. There is also a 
copy of Dana's Manual of Geology kept in Alcove No. 2, for 
the use of visitors who wish to consult its pages. This series will 
be of particular benefit to students of geology, by allowing them 
to see a specimen of the species illustrated in the Manual or Text 
Book, which will enable them to form a much clearer idea of the 
object than can be obtained from the figure alone. In many cases 
the actual specimen from which the figure was originally made 
is placed in the series. This feature is one never before attempted 
in any collection or museum. 
GEOLOGICAL CHARTS AND RELIEF MAPS. 
On the walls of the room are several geological Maps and 
Charts, the latter showing the succession of epochs and giving 
their comparative thickness in America, and also indicating by 
the color used their prevailing lithological character. On the 
top of the cases, each side of the northern door, relief maps are 
exhibited which show the topographical features and geological 
