INHERITANCE OF FECUNDITY 223 



Matings: A. With 5 9 9 indicated to be of class 1 (Table 8) = JLih . FLih. 



9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 1 9 



Expected 10 



Mean winter production of all 



9 9 in indicated class 37.00 eggs 8.56 eggs 



B. With 2 9 9 indicated to be of classes 2 or 3 = fhU . FLih or fLih • Fhh. 



9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 5 3 



Expected 6 2 



Mean winter production of all 



9 9 in indicated class 8.00 eggs eggs 



All 9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 1 14 3 



Expected 16 2 



Mean winter production: 37.00 8.36 eggs eggs 



The one bird recorded here as 'Over 30' laid but 37 eggs. Her 

 progeny show clearly and unmistakably that she did not bear L2. 

 That is to say, her record is a somatic fluctuation above the 30 

 limit, and has no gametic foundation. The agreement between 

 observation and expectation on a gametic basis is really perfect 

 for mating A. Taken as a whole the facts speak for" themselves. 

 The contrast with the results of Barred Rock matings is striking. 



Matings of a Cornish Indian Game male of class 3 (table 7). 

 Male no, 578 was hatched in 1909 and used in the breeding pens 

 the following year. His breeding record shows that he was homo- 

 zygous with respect to the absence of both fecundity factors, hav- 

 ing the constitution flih , fhk- He then belongs to class 3 of 

 table 7. His breeding record is as follows: 



