IX HEREDITY 175 



statistical records in the ordinary course of routine 

 observations. Ttius we possess the curves for growth, 

 flowering, boiling, and shedding for almost every indi- 

 vidual studied. Data for weight of lint per seed, and for 

 ginning out-turn are also to hand, but the majority of 

 these records are of more value as supplementary sources 

 of information in physiology than from the standpoint 

 of Genetics. At the same time, they are frequently of 

 interest as showing the commercial resultant of those 

 conflicting gametic forces whose lines we have endeavoured 

 to trace. 



