APPENDIX. 529 



almost forming a solid body. This however is not 

 always the case, in every part of animals of this 

 order, for under the head, or what may be rather 

 called neck, of the Bottle-nose Whale the fat is 

 confined in larger cells, admitting of motion. 

 This reticular membrane is very fine in some, and 

 very strong and coarse in others, and even varies 

 in different parts of the same animal. It is fine 

 in the Porpoise, Spermaceti, and large Whalebone 

 Whale, and coarse in the Grampus and small 

 Whalebone Whale. In all of them it is finest 

 on the body, becoming coarser towards the tail, 

 which is composed of fibres without any fat, 

 which is also the case in the covering of the fins. 



In this order of animals the internal fat is the 

 least fluid, and is nearly of the consistence of hog's 

 lard ; the external is the common train oil : but 

 the Spermaceti W^hale differs from every other 

 animal I have examined ; having the two kinds of 

 fat just mentioned, and another which is totally 

 different, called spermaceti. This is found every 

 where in the body in small quantities, mixed with 

 the common fat, to wbich it bears a very small 

 proportion ; but in the head it is the reverse, for 

 there the spermaceti is large in quantity compared 

 with the oil, although they are mixed, as in other 

 parts of the body. As the spermaceti is found ia 

 the largest quantity in the head, and in what 

 would appear on a slight view to be the cavity of 

 the skull, from a peculiarity of the shape of that 

 bone, it has been imagined by some to be the 

 brain. 



