Abstracts of Papers. 67 



T Ke Mastoaon ana the Glacial Age 



By W. E. Myer. 



(Abstract.) 



A description of the Mastodon unearthed by W. E. Myer in 

 Marshall County, Tenn., in July, 1912. The evolution of the 

 Mastodon, Mammoth and elephant from the small Moeritherium 

 of the Eocene in Egypt. The Mastodon closely identified with 

 the Glacial Age of the Pleistocene. 



The three great glacial ages in Cambrian, Permian and Pleis- 

 tocene. Remarkable climatic conditions during some of these 

 ages ; warm and temperate at the poles, cold and great fields of 

 ice on the tropics of Cancer and Capricorn. Man and the Mas- 

 todon. The lecture was illustrated with twenty-five lantern views, 

 as follows : 



(1) A restoration of the Mastodon from Gleeson's Picture in National 

 Museum. 



(2) Photo of Jumbo, Siberian Mammoth and Newburg Mastodon. 



(3) Restoration of Newburg Mastodon. 



(4) Mounted Skeleton of Newburg Mastodon. 



(5) Mammoth from Indiana. 



(6) Head and Tusks of Great Texas Imperial Mammoth. 



(7) Right fore leg of Texas Imperial Mammoth. 



(8) Palatal view of skull of Texas Mammoth. 



(9) Photo of teeth of Texas Imperial Mammoth, the Indiana Mam- 

 moth and Siberian Mammoth. 



(10) Photo of Mastodon tooth. 



(11) Group of ancestors of elephant. 



(12) Texas Imperial Mammoth and a small relative. 



(13) How this relative, the Trilophodon, secured its food. 



(14) Evolution of head of elephant. 



(15) Evolution of Tusks. 



(16) The Paleomastodon. 



(17) Internal section of head of Paleomastodon. 



(18) External appearance of Paleomastodon head. 



(19) Moeritherium. 



(20) External appearance of head of Moeritherium. 



(21) Internal section of same. 



(22) Map showing location of ice in Permian. 



(23) Boulder beds of Australia. 



(24) Map of North America in Pleistocene. 



(25) Map of Eurasia in Pleistocene. 



