66 DISEASrS OF POUI.TRV 



OHAPTKR in. 



Diseases of the Organs of Digestion. 



GENERAIv KEMAKKS CONCERNING THE IJI(:;?,STIVE ORGANS — 

 OBSTRUCTION OK THE BEAK — INFLAMMATION OF THE 

 MUCOUS MEMBRANE OF THE MOUTK, PIP, CATARRHAL 

 STOMATITIS — THRUSH, APHTHA — DIPHTHERIA — PSOROS- 

 PERMOSIS — ASPERGILLOSIS — CROUPOUS ANGINA — OB- 

 STRUCTION OF THE PHARYNX — CATARRH OR INFLAM- 

 MATION OF THE CROP — PARALYSIS OF THE CROP, IM 

 PACTED CROP, OBSTRUCTED CROP — ABNORMAL APPETITE, 

 ABERRATION OF THE APPETITE — CATARRH OF THE PRO- 

 VENTRICULUS, INFLAMMATION OF THE STOMACH, GAS- 

 TRITIS. 



GENERAL REMARKS CONCERNING THE DIGESTIVE 



ORGANS. 



^^W'T IS necessary to know something of the form, 

 Wu structure, situation and use of the different 

 II orj^ans which constitute the digestive appa- 

 ratus in order to fully understand the diseases 

 to which these organs are subject. Birds do not masti - 

 cate their food as do mammals, but this is swallowed 

 in the condition in which it is found, and, after passing 

 along the upper ])art of the oesophagus, drops into the 

 crop. The crop, or first stomach, Fig. 14-4, is a dila- 

 tation of the oesophagus ; or we might call it a pouch 

 attached to the front of this tube before it reaches the 

 second stomach or succentric ventricle. It niav be 



