Diseases of the Digestive Organs. 179 



lus and Dochmius Trigonocephalns, each under one-liali 

 incli ; and Tricocephalus Depressiusculus, the thick part 

 of which is about one-half inch. One worm of the cat, 

 Ascaris Mystax, one to three inches long, deserves men- 

 tion because of its being harbored also in the human intes- 

 tine. 



General Symptoms of Intestinal Worms. These are 

 shown when worms are present in large numbers, when 

 they attach themselves to the mucous membranes or when 

 they bore through these to reach other parts. There are 

 general signs of ill-health, poor condition, pot-belly, hide- 

 bound, a scurfy, dry state of the skia, often with itching, 

 irregular and usually voracious appetite, foetid breath, di- 

 arrhoea alternating with costiveness, the passage of mu- 

 cus with the dung, slight, colicky pains with tympany, es- 

 pecially in the morning before feeding, a puffy swelliag 

 and itchiness of the anus, which is often surrounded with 

 a fur of dried mucus, and above all, the passage of the worms 

 or tJieir eggs. 



In the horse there is often a tendency to elevate the up- 

 per Up and to rub it against wall or manger, to lick earth 

 or lime, or to shake the tail or rub out the hair about its root. 

 There may, though rarely, be severe flatulent or spasmodic 

 coHc, enteritis or peritonitis. 



In cattle there are advancing emaciation, depraved or va- 

 riable appetite, impaired rumination, colics, tympanies 

 and foetid breath. 



Sheep lose appetite, scour, suffer from thirst, wasting, 

 bloodless eyes, clapped, unhealthy or shedding wool, a 

 desire to eat earth, itching anus shown by frequent shak- 

 ing of the taU, and finally dropsical effusions in the chest 

 and belly and beneath the lower part of the body. They 

 become duU, hopeless-looking and leave the flock. 



Swine beside the general symptoms have unusual vorac- 

 ity, and yet lose flesh, cough, scour, start from rest or 

 sleep with a sharp cry, scream excessively just before 

 feeding, have colicky pains, tender abdomen and vomiting, 



