416 Da KNOX on the Dentition of the Dugong, and on the 



ous, as I have already said, with those of the first stomach, and 

 transmitted over the second, which they, in like manner invest, 

 to the third. The interior of this second cavity, when laid open, 

 presents a series of longitudinal and transverse elevations, which 

 resemble the interlocking of the fingers with each other. To 

 this stomach most of the branches of the nervi vagi are distri- 

 buted. 



The third and fourth cavities have been very carefully de- 

 scribed by Baron CUVIER, and by most systematic writers on 

 comparative anatomy, The questions raised by CAMPER as to 

 the number of the stomachs in this animal, do not merit notice. 

 The accompanying sketch will perhaps explain in an easier way 

 than I have done, to the non-professional reader, the structures 

 in question. I forbear for the present all speculation as to the 

 nature of these fibres, which are obviously not muscular, and 

 can hardly be considered merely glandular ; future observation 

 and experiment will, no doubt, one day determine whether or 

 not I am correct in supposing them analogous to the electric 

 organs of certain fishes. 



