18 



TROF. B. C. A. WINDtE AND MR. J. HUMPHREYS [Jan. 14, 



The Bull-dog is an animal which has been used in numerous 

 crosses. On account of its peculiarities one would expect that 

 various specimens would present tolerably similar measurements, and 

 this especially in the case of those detailed below, since in the 

 greater number of cases the skulls are stated to have belonged to 

 pure-bred animals. Yet, as we have already mentioned, in no 

 breed are more striking differences to be remarked. 



]S"o3. 1-7. Eoy. Coll. Surgeons. No9. 8, 9. Nat. Hist. Bins. Nos. 10, 11. Oxford. 



The British breed of PuG is, according to ' Stonehenge,' one of 

 those known to have existed from the earliest times. The two chief 

 strains are the Morrison aud the Willoughby d'Eresby. Fitzinger 

 supposes the breed to have been derived by selection from the 

 saialler kind of Bull-dog. 



Table XXIV.— Pm^s. 



So. 



No. 1. Hoy. Coll. Surgeons. No. 2. Trin. Coll. Dublin. No. 3. Cambridge. 



