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PROCEEDINGS OF THE AMERICAN ACADEMY. 



young of selected parentage and in the other with young taken at 

 random. 



Tables II and III show from another point of view the results obtained 

 from the first generation. In Table I the results are given as a whole, 



TABLE I. 



Eesults of Selected Matings in the Brook Trout 



(Salvelinus fontinalis Mitchill). 



First Generation. 



but in these two tables the results are grouped according to the condi- 

 tion of the chiasmata in the parents. Lots C and D, 1901, have to be 

 omitted from Tables II and III, as the crossing in the female is not known. 

 In comparing the results in these two tables, it is interesting to note 



