486 FREDERIC T. LEWIS 



and in its manner of origin has much in common with the caecum 

 and vermiform process. From numerous observations they con- 

 clude that "it is not uncommon to find in the stomach of the 

 anthropoids, and to a lesser degree in that of the apes (especially 

 in Mycetes) clear indications of three chambers, namely, a fun- 

 dus, a body, and a pyloric part; and that therefore the stomach of 

 the Primates (excluding the Lemuroidea) is probably tripartite in 

 nature." It should be noted that the fundus as defined by Keith 

 and Jones is a larger part of the stomach than that set off by Jon- 

 nesco, and that their boundary is justified by comparison with the 

 stomach of Semnopithecus which they have figured. If the fun- 

 dus corresponds in any way to a first stomach or rumen, it may be 

 regarded as the globular upper end of the organ which is often 

 marked off by the contraction of the corpus. 



The body of the stomach (corpus gastri), as defined by Rudin- 

 ger (1873), is its middle subdivision, situated between the fundus 

 and the pars pylorica. Froriep (1907) proposed to rename it 

 the pats intermedia; but since it is a portion of the pars cardiaca, 

 and is not intermediate between the pars cardiaca and pars pylor- 

 ica, the proposed term would lead to confusion. Jonnesco (1895) 

 defined the body as including the pyloric vestibule, but in the 

 same paragraph he described the boundary between the vestibule 

 and "le corps proprement dit." Muller (1897) included the fun- 

 dus with the body, making corpus and pars cardiaca synonymous. 

 It is only by accepting Riidinger's earlier definition that corpus 

 becomes a useful term. The corpus may be contracted at any 

 point, as in the hour-glass stomach, in which case part of it appears 

 to belong with the fundus and the remainder with the pars 

 pylorica. Sometimes it is contracted as a whole, but more often 

 it is relaxed, and its boundaries are then ill-defined. 



The gastric canal is a channel which follows the lesser curva- 

 ture, appearing as a groove when seen from the inside of the stom- 

 ach. It suggests a continuation of the oesophagus, split open 

 toward the gastric cavity, and has been named the sulcus oesopha- 

 geus, sulcus gastricus, sulcus salivalis and canalis salivalis. It is 

 confusing, however, to refer to this channel as a sulcus, since the 



