66 DISEASES OF POULTRY. 



CHAPTER HI. 



Diseases of the Organs of Digestion. 



GENERAI< REMARKS CONCERNING THE DIG RSTIVE ORGANS — 

 OBSTRUCTION OF THE BEAK — INFLA'.IMATION OF THE 

 MUCOUS MEMBRANE OF THE MOUTH, PIP, CATARRHAI< 

 STOMATITIS — THRUSH, APHTH^S — DIPHTHERIA — PSOROS- 

 PERMOSIS — ASPERGII,I,OSIS — 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, 

 II structure, situation and use of the different 

 II organs 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 part of the oesophagus, drops into the 

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

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

 attached to the front of this tube before it reaches the 

 second stomach or succentric ventricle. It mav be 



