8o MUSEUM OF COMPARATIVE ZOOLOGY 



well as by several smaller ones. These comprise many types as well 

 as much study material. 



In 1890 was added one of the most important acquisitions in the 

 Museum, namely the mounted group of ground sloths, a glyptodont 

 and a complete Toxodon from the Argentine pampas. This group 

 has'been mentioned in the Museum guide. 



More recently the Gibbes, Frost and Wilson collections have been 

 acquired, comprising, in large part, Cetacean material from the 

 Tertiary of South Carolina. The Pleistocene of Cuba is well repre- 

 sented by material, chiefly rodent, collected by Messrs. Barbour, 

 Brooks and Warner, and by the Moreno collection which contains 

 many specimens of ground sloths. The same period in Florida is very 

 thoroughly covered by the recent excavations of C. P. Singleton, who 

 was financed by a friend of the Museum. From Mr. Childs Frick we 

 obtained several fine bison skulls from the Pleistocene of Alaska. 



From 1925 on, the choicest material has come from the Schlaikjer 

 expeditions to South Dakota, Nebraska and Wyoming. Part of the 

 Earl Douglass collection was acquired in 1931, and more recently the 

 Harvard-Australian expedition obtained several specimens of fossil 

 marsupials of that isolated continent. Much of the material from the 

 later expeditions is of exhibition rank, and has been described in the 

 guide to the Museum. Suflfice it to say that exhibits of fossil mammals 

 have now been developed sufficiently to form an important aid in 

 teaching the various courses in palaeontology. 



