A CENTRAL AFRICAN GLACIER OF TRIASSIC AGE 701 

 RESUME 



The geology of Central Africa is as yet too little known to 

 discuss the possible bearing of this ancient glacier within the tropics 

 upon the broad problems of general and glacial geology. It 

 suffices to state that there appears to be reason to believe that in 

 Triassic times, when tropical life flourished in polar regions, a 

 temperate or coolish climate existed to the west of Lake Tanganyika 

 in Central Africa 4° 30' from the equator. 



Knowlton^ in describing the Triassic flora states that it indicates 

 that there were "no or but sHght seasonal changes due to altera- 

 tions of hot and cold or wet and dry seasons." It was "on the whole 

 a moist, warm, probably at least subtropical climate."^ He men- 

 tions that Triassic floras have been found on the east coast of 

 Greenland, and in Spitzbergen. 



July 9, 1910 



EXPLANATION OF PLATE 



Plate I. — Glacial-scratched bowlders; basal conglomerate. Lubilache forma- 

 tion, Lulindi River, near Piana Lusuna. 



^ Journal of Geology, XVIII, 107. 

 2 Ibid., 106. 



