1 28 ECONOMIC MAMMALOGY 



the size of pigs and young calves, and are often very dangerous to 

 men. A Florida alligator seized a 5O-pound dog, crunched its bones 

 and swallowed it whole. The dangerous "man-eating" crocodiles live 

 in Africa and India, where "old examples will rush from the water, 

 seize a human adult or child then drag the prey into the water to 

 drown." 43 In 1910, 244 deaths of human beings in India were caused 

 by alligators and crocodiles, 44 In Louisiana alligators are considered 

 by trappers great enemies of muskrats, but forty-four stomachs were 

 examined and "not a trace of muskrat was found in any of them." 45 

 possibly because in Louisiana, owing to the menace of alligators, the 

 muskrats have developed more terrestrial habits than in most regions. 



Two bats were found in one black snake, and four shed skins found 

 in the bat roost indicated the reason that the number of bats had di- 

 minished by over 50 per cent in one year. 46 



A full-grown mole was found in the stomach of a 14-ounce frog. 47 



43 Ditmar, The reptile book, p. 89, 1907 ; Reptiles of the world, pp. 65, 67, 78-81, 1910. 

 "Science, xxxvn, 938, 1913. 



45 Arthur, The fur animals of Louisiana, Louisiana Dept. Conserv. Bull. No. 18, 

 p. 164, 1928. 



46 Silver, Pilot black snake feeding on the big brown bat, Journ. Mammalogy, ix, 

 149, 1928. 



47 Heller, Brewer's mole as food of the bullfrog, Copeia, No. 165, p. 116, 1927. 



