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 Bridges, C. B. 



1921. Genetical and cytological proof of non-di.sjunction of fho fourth chromosome 



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 Detlefsen, J. a. 



1920. Is crcssing over a function of distance? Proc. Nat. Acad Sciences vol 6- 



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1919. The analysis of a case of continuous variation in Drosophiln by a study of its 

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 Federley, Harry. 



1914. Ein Beitrag zur Kenntnis der Spennatogone.se hei Mischlingm rwinchen 



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 Fisher, R. A. 



1922. The systematic location of genes by means of crossover ob.servations. \n\vT. 



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 Gowen, Marie S., and John W. Gowen. 



1922. Complete linkage in Drosophila melanogaster. Amer. Nat., 56: 286-288. 

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1914. On hybrids between moths of the Geometrid sul)familv Bistoninap, etc. Jour. 

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1916. A review of the chromosome numbers in the Metazoa. Jour. Mori>h., 28: l-<>3. 

 Hyde, Roscoe R. 



1915a. The origin of a new eye-color in Drosophila repleta and its behavior in heredity, 



Amer. Nat., 49: 183-185. 

 19156. A wing mutation in a new species of Drosophila. Amer. Nat., 49: 185-187. 

 1922. An eyeless mutant in Drosophila hydei. Genetics, 7: 319-334. 

 Lancefield, D. E. 



1922. Linkage relations of the sex-linked characters in Drosophila obacura. Grnotics, 

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1921. Non-disjunction and the chromosome relationships of Drosophila willistoni. 



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1914. A comparative study of the chromosomes in orthoptcran .spermatogencsia. 



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1914. Chromosome studies in Diptera. 1. .\ preliminary .survey of five difTcrpnt 



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93 



