20 



CETACEA. 



able manner, not only as to the situation of the umbilicus and 

 other parts, but in the breadth of the tail, the length of the fin 

 and arms. This, however, is what should be expected, supposing 

 Mr. Hunter's to have been a young animal, because such pro- 

 portional superiority in size of the extremities is characteristic of 

 the earlier periods of life." 



In the following table (observes Dr. Jacob), the first column 

 contains the dimensions of each part in feet and inches; the 

 second, the proportion which each measurement bears to the en- 

 tire length of the animal, which is supposed to be 1000. 



2. In the s Zoology of the Erebus and Terror ' I gave the 

 following table of the measurements of specimens taken from the 

 various authors cited, in feet and inches : 



The older specimens, viz. Sibbald' s male, 7$> Ravin's, 42, and 

 Schlegel's, 40, and Van Breda of Ostend's female, 82 feet long, 



