448 Proceedings of the Royal Physical Society. 
North Seas, the crew took a female Narwhal having a tooth 
in the upper jaw, perfect, and in every respect like that of 
the male, though not so long. The sex of the animal was 
satisfactorily ascertained in cutting up, when two foetuses 
were taken out of it, Mr Brown was acquainted with similar 
instances of the " horn" being protruded in the female Nar- 
whal ; and though it is said to have been seen with two 
young following it, yet the instances mentioned were the 
only ones with which he was acquainted, in which the subject 
had been brought to an experimentum crucis. In all likeli- 
hood, the Getacea in this respect follow the same laws as 
the other Mammalia, though our opportunities for observing 
the former were much more limited ; and hence the value 
of every fact, however apparently trifling, being put on 
record. 
Mr W. S. Young proposed a vote of thanks to the Presi- 
dents and other office-bearers, which was unanimously 
agreed to, and the Society adjourned until the commence- 
ment of the next Session. 
