144 



PHYSIOLOGY AT THE FARM. 



into the second. Neither does anatomy determine what parts 

 are concerned in returning the altered aliment to the mouth ; 

 for all the parts which can be conjectured to produce this 

 effect namely, the gullet, the demi-canal of the gullet, the first 

 stomach and the second stomach abut on the same point that 

 point, namely, where the effect, that is, the rejection, occurs. 

 Again, anatomy does not indicate into which of the remoter 



Fig. 13. 



LEFT VIEW OF THE STOMACHS IN THE SHEEP. 



a, (Esophagus ; b, rumen ; c, reticulum ; d, omasum, not seen ; e, abomasum 

 /, duodenum. 



stomachs the ruminated aliment is returned ; for the demi- 

 canal of the gullet, which manifestly takes the chief share in 

 this act, abuts almost equally on the second and third stomachs, 

 just as the gullet itself abuts almost equally on the first and 

 second. The anatomical structure thus leaves everything in 

 doubt. It is not surprising, then, that very contradictory views 



