160 OTTO L. MOHR 



Mohr, O. L. 1922. Cases of mimic mutations and secondary mutations in 

 the X-chromosonu' of Drosophila melanoyaster. Zeilschr. Abst. Vererb., 

 Bd. XXVIII, Heft 1: 1—22. 



Morgan, T. II. and Bridgks, C. B. 19H). The origin of gynandromorphs. 

 Cornegie Inst. Wash. Pub. No. 278: 1—122. 



MuLLKR, H. J. 1920. Further changes in the white-eye series of Drosophila 

 and their bearing on the manner of occurrence of mutation. Journ. Exp. 

 Zool., Vol. 31, No. 4:443—473. 



Sturtkv.\nt, a. H. 1921. Genetic studies on Drosophila simuhms. II. Sex- 

 linked group of genes. Genetics, Vol. 6, No. 1:43 — 64. 



