of the Peruvian Lama. 497 



Till anatomists have determined what is to constitute a 

 double, what a single stomach, or until they have corrected 

 their nomenclature, let us consider the stomach in all animals as 

 a single organ, varying with the species, performing a single 

 function, and not to be determined on a priori, by any doctrine, 

 anatomical or physiological, nor by any pretended necessary re- 

 lative dependence upon any other co-existing anatomical struc- 

 tures. 



EXPLANATION OF PLATES XVI. XVII. AND XVIII. 



PLATE XVI. 



Fig. 1 - A view of the paunch or first stomach laid open : the larger assemblage of 

 cells is represented with great care, and a portion of the smaller may also 

 be seen ; the strong muscular bands dividing the rows of cells from each 

 other, and the cross slips of fibres separating the cells individually and 

 in pairs. 



a points out a strong band of muscular fibres, which extends from the gullet 

 to the extreme of the third stomach ; and 



b marks a still stronger assemblage of muscular fibres, which form, as it were, 

 a base, from whence the numerous bundles of fibres dividing the rows of 

 cells from each other proceed. The extremity of this bundle of fibres 

 may also contribute towards the formation of the channel or groove 

 spoken of in the text at page 15. 



