OTHER ZOOLOGICAL WORK 195 



together and reprint them with luminous additions 

 of his own, as in the case of the Cranes." 



A good example of a work he wrote in 

 collaboration with a living expert is the book 

 on Horses, Asses, Zebras, Mules, and Mule- 

 breeding, which he did with the aid of his friend 

 Colonel Charles L. Sutherland, with whom he 

 was brought in touch by his study of Hybridity 

 and Cross-breeding. Colonel Sutherland was 

 largely interested in the breeding of mules for 

 the Army service in India, and had his advice 

 been followed, says Tegetmeier, it would have 

 prevented the need for the importation of some 

 50,000 mules from America for service in the 

 South African War. This work, of great practical 

 and permanent value, was the fruit of much 

 personal research and enquiry, particularly into 

 the methods of French mule-breeders. I am 

 indebted to the kindness of the publishers, 

 Messrs. Horace Cox, for leave to reprint one of 

 the illustrations to this deeply interesting and 

 informative book. 



One of the creatures observed by Tegetmeier 

 was the curious amphibian animal the axolotl, 

 so common in the lakes near the city of Mexico 

 that it is there brought regularly to market 

 and used largely by the Mexicans as food. It 

 was a subject of great interest to scientists, as 

 may be judged from the fact that Cuvier thought 

 it was a larval form which for some reason was 



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