32 



EXPERIMENTS IN THE BREEDING OF CERIONS. 



TABLE No. 14. Second generation of Florida-grown Cerion viaregis. 



TABLE No. 15. Comparison between check series of Cerion viaregis and first and second 



generation of Florida-grown specimens. 



the first generation. The specimen having the greatest number of 

 whorls in the second generation has less than the specimen having the 

 greatest number of whorls in the first generation. In that respect it is 

 nearer to the specimen having the greatest number of whorls in the 

 check series, but the amount of variation there may again be said to 

 be negligible. In altitude we find one specimen in the second genera- 



