MAMMALIA. 



H3 



recurrent which winds round the subclavian artery on the right side, and the arch of 

 the aorta on the left ; it sends filaments to the oesophagus ; it gives several branches to 

 the heart, and copiously supplies the lungs ; it then passes to the oasophagus, where its 

 branches are more deeply imbedded in the muscular fibres than in other animals ; the 

 greater portion corresponding with the posterior trunk supplies the first, or cuticular, 

 and the second, or villous, stomach ; after forming a sort of corona or ring on the 

 lower part of the oesophagus, it sends filaments to the diaphragm and to the left 

 semilunar ganglion ; it also sends branches towards the other three stomachs or 

 duodenal pouches, a branch to the liver, and others to communicate with branches 

 from the coeliac plexus on the branches of the coronary artery passing to the stomachs, 

 and with some of the branches of the hepatic plexus as this passes to the liver ; the 

 smaller portion corresponding with the anterior trunk passes down and sends some 

 filaments to the lower portion of the oesophagus and the first stomach, but its principal 

 part divides to join both semilunar ganglia. 



The cervical portion of the par vagum is rounder in the jaguar than in the ass, in 

 which it is rather broader and flatter, so that there is not much difference in their size ; 

 it is nearly equal in the jaguar and baboon ; in these it is a little less than in the dog, 

 and less in the dog than in the pig. The anterior cord on the oesophagus, just before 

 it passes through the diaphragm, is nearly of the same size in a young ass, about a 

 month old, and one a year older ; but the posterior is somewhat larger in the older. 

 The anterior cord is rather less in the ass than in the baboon and jaguar, in both of 

 which it is equal ; it is less in the jaguar than in the dog, and less in the dog than in 

 the pig. The posterior cord is less in the baboon than in the ass and jaguar, less in 

 these than in the dog, and less in the dog than in the pig. The cervical portion was 

 larger in the calf a week old, than in the ass a month old ; the anterior and posterior 

 cords, after supplying the lungs, were both also much larger in the calf, but this was 

 before the ruminating stomachs had been much used. 



In mammalia, the pharyngeal plexus is very much like that in man, but not near 

 so complicated. In the ass, a branch is given from the glosso-pharyngeal, and from 

 the union of the par vagum and accessory, and from the superior cervical ganglion of 



