72 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



patches. Brown offspring were produced from black Hybrids 

 (see Table below and Chart above). 



(4) That from the common brown Rat (norvegicus) mated 

 to the domestic white Rat (albino), gave results in accord 

 with the Mendelian laws of inheritance, and also in accord 

 with the results published by the late Professor Doncaster 

 in the Proceedings of the Cambridge Philosophical Society, 

 Vol. XIII, Part 4. 



(5) That from the pairs of ?wrvegicus females mated to 

 rattus males I had no results. 



Table of matings and results to show the inheritance of the three varieties, 

 Rattus r. rattus, R. r. frugivorus, R. r. alexandrinus. 



Exp. 



No. 



Female 

 Parent. 



Origin. 



Male Parent. 



Origin. 



Result. 



Sex. 



i 



rattus 



wild caught 



frugivorus . . . 



wild caught 



f 6 frugivorus . . . 

 ( 2 rattus 



3o*, 3? 

 2? 



2 



alexandrinus 



wild caught 



rattus 



wild caught 



( 9 rattus 



\ 7 alexandrinus 



{ 1 frugivorus . . . 



8c?, 1? 

 4c?, 3? 



3 



rattus 



off No. 2 ... 



frugivorus 



off No. 1 ... 



[ 13 rattus 



j 12 frugivorus ... 



( 1 alexandrinus 



7c?, 6? 

 5c?, 7$ 

 1c? 



4 



alexandrinus 



off No. 2 ... 



alexandrinus 



off No. 2 ... 



17 alexandrinus 



8c?, 9$ 



5 



frugivorus ... 



off No. 1 ... 



frugivorus ... 



off No. 1 ... 



13 frugivorus ... 



5c?, 8? 



6 



rattus 



off No. 2 ... 



rattus 



off No. 2 ... 



j 8 rattus 



\ 4 alexandrinus 



6c?, 2? 



4c? 



7 



rattus 



wild caught 



rattus 



wild caught 



7 rattus 



3c?, 4$ 



