APPENDIX 233 



Black. — "Heredity of Bod}^ Color in Drosophila." Jour. Exper. 



ZooL, XIII. 1912. 

 Cherry. — ''A New Eye Color Mutation in Drosophila, Etc." Biol. 



Bull, XXV. 1913. 

 Ebony. — ''A Third Group of Linked Genes in Drosophila." Science, 



XXXVII. 1913. 

 EosiN. — "Dilution Effects and Bicolorism, Etc." Jour. Exper. 



Zool, XV. 1913. 

 Eyeless. — "Another Gene in the Fourth Chromosome of Droso- 

 phila." Amer. Nat., XLIX. 1915. 

 Lethal. — "Two Sex-linked Lethal Factors in Drosophila, Etc." 



Jour. Exper. Zool, XVII. 1914. 

 Miniature. — "A Modification of the Sex Ratio, Etc." Zeits. f. 



ind. Abst.- u. Vererb.-Lehre., VII. 1912. 

 Pink. — "Dilution Effects and Bicolorism, Etc." Jour. Exper. 



Zool, XV. 1913. 

 Rudimentary. — "A Modification of the Sex Ratio, Etc." Zeits. /. 



ind. Ahst.- u. Vererb.-Lehre., VII. 1912. 

 Spot. — "Another Case of Multiple Allelomorphs in Drosophila." 



Biol Bull, XXVI. 1914. 

 Vermilion. — "Dilution Effects and Bicolorism, Etc." Jour. Exper. 



Zool, XV, 1913. 

 Vestigial. — "No Crossing Over in the Male of Drosophila, etc." 



Biol Bull, XXVI. 1914. 

 White. — "Sex Limited Inheritance in Drosophila." Science, 



XXXII. 1910. 

 Yellow. — "Heredity of Body Color in Drosophila." Jour. Exper. 



Zool, XIII. 1912. 



Formula 



Baur's plan of using non-significant letters has 

 no doubt certain advantages, but in practice signifi- 

 cant letters are too useful to be given up. We have 

 followed a plan which avoids the objections of the 

 presence and absence scheme, and has the advantage 

 of significant letters. In this plan a small letter is 

 used for the mutant factor if recessive, and a large 



