NOTE ON THP] OFFSPRING OF A DWARF 

 BEARING STRAIN OF GUINEA PIGS. 



By I. B. J. SOLLAS. 



Newnham College, Cambridge. 



The breeding experiments on a dwarf bearing strain of Guinea pigs 

 described in the Reports to the Evolution Committee of the Royal Society 

 (Sollas 1909) have been continued. The results up to the present are 

 shown in the following tables : 



(1) Complete list of all the dwarfcontainimj families^ . 



Offspring 



Totals ... 80 90 24 40 22 " 



Normal 192 ; Dwarf 64. Females 104 ; Males 130. | 



1 Errors in the previous table have been corrected. j 



