SOME MUSEUM PUBLICATIONS 
OF USE IN CONNECTION WITH THIS LEAFLET 
ANIMALS OF THE PAST. By Freperic A. Lucas 
No. 
No. 
A popular account of some of the creatures of the Ancient 
World; tells of Mammoth and Mastodon, the great Sea Reptiles, 
the Dinosaurs and giant Birds. 250 pages with 41 illustrations by 
Charles R. Knight and Joseph Gleeson. Paper, 50 cents. 
5. DINOSAURS. By W. D. Matruew, Ph.D., Curator of Verte- 
brate Paleontology. December, 1915, 102 pages, 49 illustrations. 
Paper, 30 cents. 
An account of these huge monsters, describing also the condi- 
tions under which they lived and flourished and telling of their 
distribution in the days when the earth was young and how their 
bones are discovered, collected and mounted. 
. 36. THE EVOLUTION OF THE HORSE IN NATURE AND 
UNDER DOMESTICATION. By W. D. Martrurw, Ph.D., 
Curator, Department of Vertebrate Palzeontology, and 8. H. Couns. 
September, 1913, 64 pages, 39 illustrations. Price, 25 cents. 
The past geologic history of the Horse affords the most complete 
and convincing illustration of evolution among mammals. This 
leaflet, based upon material in this Museum, describes the successive 
stages in its evolution from the four-toed ‘‘ Kohippus no bigger than 
a fox”’ to the single-toed horse of to-day. 
.43. MAMMOTHS AND MASTODONS. By W. D. Marruew, 
Curator, Department of Vertebrate Paleontology. November, 
1915, 25 pages, 12 illustrations. Price, 15 cents. 
These extinct relatives or ancestors of the existing elephants 
have been found in every part of the habitable world except Austra- 
lia. They and their remains are described and figured in this leaflet. 
42. THE BIG TREE AND ITS STORY. By Grorce H. SHEr- 
woop, Curator, Department of Public Education. New edition, 
April, 1915, 23 pages, 9 illustrations. Price, 10 cents. 
This big tree started in life in 500 A.D., and during the fourteen 
hundred years of its existence occurred all the more important 
events of history, while what we term biology, or the knowledge of 
living things, has been acquired during the last three hundred years 
of its growth. 


