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fore, lie found that Dr. R. C. L. Perkins, in his correspond- 

 ence, suggested the same association between mimicry and 

 forest areas, he determined to write at once to Africa and 

 make special inquiry. 



Mr, C. A. Wiggins of Entebbe replied, on Dec. 18, 1911, 

 saying that he did not remember ever seeing a lizard in the 

 true forest, but only in the glades, and that he had consulted 

 with the Governor, Mr. F. J. Jackson, and found that their 

 experience agreed. Mr. Jackson had kindly written the 

 following letter on the subject :— 



"Government Housr, Uganda, 

 " Dec. 18, 1911. 



" Regarding lizards, I should say for every one you find in 

 a forest, you find ten out in the open. 



"Regarding insectivorous birds : the great majority, which 

 include Shrikes {Dryoscopus and Laniarius), Trogons [Hcqxdo- 

 derma), Cuckoo-shrikes {C ainpe2:>haga and Graucalus), Fly- 

 catchers (various), Warblers (various), Robin-chats {Cossyj)hus), 

 Bulbuls {Xenocichla and Androjyadus), are found in open 

 forests, on the outer edge of thick foi^ests, or forest glades. 

 Most of the birds that are found in thick forest, i. e. well 

 inside, frequent the tall tree-tops rather than the under- 

 growth. The Bee-eater {Merops albicollis), very common 

 here, frequents tall trees in thick forests, rather than the 

 open like most of the family. 



" Exclusive of grain-eaters (Weavei'S, etc.), which feed 

 their young mostly on insects, there are very many more 

 species, at least fifteen to one, probably more, of insectivorous 

 birds found in the forest than there are in the open. 



'' Frederick J. Jackson." 



Mr. C. F. M. SwYNNERTON replied, December 22, 1911, 

 describing the conditions in Chirinda forest, Gazaland, S.E. 

 Rhodesia : — ■ 



" You ask whether birds are specially pai-tial here to forest 

 and lizards to open country. 



" Our lizai'ds are specially partial, apparently, to the sparse 

 wooding of our open country, not but that there may be purely 



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