A PHYSIOLOGICAL CHARACTER. 



57 



For the next year-period (August 1, 1913-July 31, 1914) the 

 means were 406.4 and 439.2 seconds. The difference (-32.8 14.5 



TABLE 21. Selection summary for Line 714- 



Time period. 



Apr. 1, 1912- 

 July 31, 1912 



Aug. 1, 1912- 

 July 31, 1913 



Aug. 1, 1913- 

 July 31, 1914 



Aug. 1, 1914- 

 July 31, 1915 



Oct., 1914...' 

 Sept. 1, 1914- 



Nov.31,1914 

 Test series, 



Nov. 1914 ... 

 Oct. 1, 1914- 



Dec. 31, 1914 

 Test series, 



Mar., 1915.. 

 Feb. 1, 1915- 



Apr. 30, 1915 

 Aug. 1, 1915- 



July 31, 1916 

 Aug. 1, 1916- 



Sept.16, 1916 



Strain. 



Plus . . . 

 Minus 

 Plus. . . 

 Minus 

 Plus... 

 Minus 

 Plus 

 Minus 

 Plus. .. 

 Mi us 

 Plu 

 Mi us 

 Plus. .. 

 Mi us 

 Plu ... 

 Mi us 

 Plu 

 Minus 

 Plus. .. 

 Minus 

 Plus... 

 Minus 

 Plus. .. 

 Minus . 



8-21 



8-21 



22-55 



2-54 



56-100 



55-101 



101-144 



102-147 



112 



114 



105-116 



107-118 



113 



115 



109-121 



111-123 



129 



131 



125-135 

 127-138 

 145-185 

 148-195 

 186-194 

 196-202 



11 

 36 

 M 



44 



ta 



41 

 45 10.3 

 16 15.6 

 16 18.1 

 12 10.4 



3530.1 



IS 11 

 3631.2 1123 

 36 31.5 1133 



39 11.1 

 7 



841 



331.8 

 397.1 



383.1 



380.2 



421. 



S9S. 



317.5 



415. 8 



301.1 



256.9 

 272.6 

 209.8 

 175.0 

 268.4 

 284.2 

 268.4 

 259.4 

 222.9 

 18. 1 

 258.9 

 185.2 

 240.1 

 243.5 



287.3 

 276.3 



250.6 



222.1 

 227.1 

 284.4 



8.2 

 7.2 

 18.9 

 26.4 



-123.5 

 + 30.7 



- 32.814.6 

 + 15.812.3 



23.4 

 21.8 

 9.5 

 7.9 

 10.3 

 10.3 

 9.2 

 8.1 

 9.5 

 8.7 

 15.6 

 10.6 

 4.9J 

 4.9t 



5.78 + 25.3 

 6.52 



+ 13.0 12.9 



63^8 



8.0 



. 

 2.48 



g.ea 



1.28 



1.01 

 5!03 

 7. 72 2. 46 



3.16 



TABLE 22. Same-day broods. Summary of data for Line 714- 



Time period. 



Apr. 13, 1912- 

 July 31, 1912 



Aug. 1, 1912- 

 July 31, 1913 



Aug. 1, 1913- 

 July 31, 1914 



Aug. 1, 1914- 

 July 31, 1915 



Aug. 1, 1915- 

 July 31, 1916 



Aug. 1, 1916- 

 Sept.16, 1916 



Plus 



Minus.. 



Plus 



Minus . . 

 Plus.... 

 Minus . . 



Plus 



Minus . . 



Plus 



M inus . . 

 Plus.... 

 Minus . . 



669 

 429 

 SOS 



406 

 342 

 331 

 403 

 351 



261.04 

 27 4. *4 



.12 



250.26 

 269.48 



289.43 



78.74 

 61. 30 

 17.05 

 21.73 

 29.84 

 30.72 

 12.12 

 15.20 



-231 

 +226 



-106 

 '-114 



27.628. 



42.82 8.46 

 19.445.86 



'45 

 ;.18 



seconds) is 2.26 times the probable error. There were 6 rather small 

 same-day broods, for which the mean for the minus strain was 

 105 42.82 seconds the larger. Again, as compared with the pre- 



