NOTE UN THE UFFSPEING OF A DWARF 

 BEARING STRAIN OF GUINEA PIGS. 



By I. B. J. SOLLAS, 



Newtiham College, Guinbridge. 



The breeding experiments on a dwarf bearing strain of Guinea pigs 

 described in the Repo)tt> 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 tlm dwarf -contaiuiiuj families^. 



Offspring 



Totals 



Female 



Dwarf Normal, sexes 



80 



90 



24 



Male unrecorded 



1 — 



9 18 



1 — 



3 — 



4 — 

 6 



40 



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

 ' Errors in the previous table have been corrected. 



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