146 



THE SECOND-CHROMOSOME GROUP 



Loci. 



Star black . 



Streak black 

 Dacha black 



Squat black. . 

 Black jaunty. 



Black purple. 



Table 15. — Summary of the cross-over data involving black. 



Black-// /o 



Black vestigial 



Total. 



1 , .352 

 496 

 865 

 690 



13,104 



16,507 



462 



338 



933 



4,892 



462 



6,725 



82 

 462 



773 

 3,934 

 6,001 



462 



36,622 



2,139 



48,931 



166 



3,499 



1,268 

 694 



4,892 



5,001 

 462 



450 

 2,1.39 



1,74b 



20,153 



Cross- 

 overs. 



522 

 203 

 315 

 266 



4,944 



6,250 



120 



82 

 163 



874 



77 



1,196 



9 

 1? 



38 

 212 

 322 



26 



2,214 



214 



3,026 



22 



632 



217 

 169 



806 



815 



78 



99 

 477 



285 

 3..57S 



Per- 

 cent. 



38.6 

 40.9 

 36.4 

 38.6 



37.7 



37.9 



26.0 



24.3 

 17.5 

 17.9 

 16.7 



17.8 



Date. 



Jan. 11. 1915 

 Oct. 23, 1915 

 Oct. 26, 1915 

 Dec. 22, 1915 



Dec. 5, 1916 



11.0 

 0.2? 



4.9 

 5.4 

 6.4 

 5.6 

 6.0 

 10.0 



6.2 



13.0 



18.1 



17.1 

 24.4 



16.5 



16.3 

 16.9 



22.0 

 22.3 



16.3 



17.8 



May — , 1914 



Mar. 18, 1913 

 June 30, 1913 

 Dec. 10, 1913 

 May — , 1914 



Apr. 3, 1911 

 May — , 1914 



Dec. 12, 1912 

 Aug. 28, 1913 

 Jan. 9, 1914 

 May — , 1914 

 Jan. 5, 1915 

 Mar. 5. 1917 



Jan. 15, 1916 



Sept. 10, 1912 



Sept. 10, 1912 

 June 8, 1913 



Dec. 10, 1913 



.Jan. 9, 1914 

 May — , 1914 



Nov. 17, 1915 

 Mar. 5, 1917 



May — . 1917 



By — 



Reference. 



Bridges. . 

 Do. 

 Do. 

 Do. 



Plough . . . ■ 



Muller . 



Bridges . . . 



Do. 



Do. 

 Muller . . . 



Bridges . . . 

 Muller 



^*' b vx 



B.C.; 1921-'24. 



ft; 



b fr 



B.C.; 2282-'84. 



Pg". . ^ B.C. ; table 123, this pape 



du- 



S' di 



B.C.; 2679-7085. 



J. E. Z., '17, p. 147; temperature 



S' 



— ^ B.C.; tables 7 (22°), 8 



(27°), 8« (22°), 111 (22°), 17,. 



Am. Nat., '16. p. 422. 



d; d b F2; II 34-36. 



d; d b B.C.; II 40-11 98r. 



d,- d 6 r)^ balanced B.C.; II 114-11 13 



Am. Nat. '16, p. 422. 



Sq: 



Sq 



B.C.; 4044. 



Bridges . . . 



Do. 



Do. 

 Muller .... 

 Plough. . . 



Do. 



Bridges . . . . 



Morgan . . . 



Do. 



Sturtevant . 



Bridges . . . . 



Do. 



Muller 



Bridges . . 

 Plough. . 

 Gostenhofer 



b Px 

 Am. Nat. '16, p. 422. 



pr; b pr B.C.; C 174-11 2. 



pr; bprc B.C.; Ists; II 58-11 88. 



pr; b Pr^V balanced B.C.; II141-6'3 



Am. Nat. '16, p. 422. 



J. E. Z., '17, total bprC B.C. 



J. E. Z., '17, total b Pr Vg B.C. 



hia; b liia F2;"2840, '59, '63. 



b 

 Biol. Bull. '14, p. 197; — " B.C. 



Vg 



Biol. Bull. '14, p. 198; b Vg B.C. 

 Zeit. f. i. A. u. V.'15, p. 286; b Vg 



balanced B.C. 

 d; d b Vg balanced B.C.; II 11^ 



II 138. 



Pr; b Pr Vg balanced B.C. ; II 141-6' 

 Am. Nat. '16, p. 422. 



<S' 

 vj*; "T — n B.C. ; table 123, this pap 



" b Vg I 



J. E. Z., '17, b Pr Vg B.C. 



b 



B.C.; students' records. 



