168 PARASITES IN THE (ESOPHAGUS. 



PAEASITES IN THE (ESOPHAGUS. 



There are two parasites occasionally found imbedded in 

 the coats of the oesophagus in the dog. They are the spi- 



was at grass, he was observed to be unwell, breathing heavily, pawing 

 the ground, and exhibiting other symptoms of choking; at the lower 

 part of the neck was an enlargement about the size of a small turnip, 

 oblong in form. A little water was given to the animal, and in a short 

 time all the symptoms of choking had passed off, and the enlargement 

 disappeared. During the past year, the colt had had some three or 

 four similar attacks, the enlargement at the inferior part of the neck 

 always being present ; but on each occasion the animal got relief in an 

 hour or two, without further assistance than was rendered by the men, 

 which was confined to giving a little tepid water, and gently rubbing 

 the swollen part with the hand. On the last occasion, however, the 

 symptoms were rather more severe, and professional assistance was 

 sought, when a probang was passed down the oesophagus and which, 

 Mr H. said, was done without any difficulty and as soon as the in- 

 strument reached the stomach, an immense quantity of a light-coloured 

 fluid was ejected through the tube, possessing a most disagreeable, 

 sour smell. The animal appeared to gain a little relief from this ope- 

 ration for a short time, but the enlargement of the neck did not dis- 

 appear as before in similar attacks, the breathing continuing very loud 

 and difficult. At this stage Mr Hunting saw the animal, when the 

 following symptoms presented themselves: colt standing, head pro- 

 truded as far as possible, upper lip almost doubled upon itself, exposing 

 nearly the whole of the buccal membrane, and a disagreeable, sour 

 fluid, mixed with large quantities of saliva, constantly dribbling from 

 the mouth; the inferior third of the neck greatly tumefied, and at the 

 superior part of which, on the left side, was a tumour, oblong in form, 

 about eight inches long and six wide. When the tumour was com- 

 pressed, it disappeared, the contents of which passed upward, enlarging 

 the gullet as it went; when the pressure was removed, it immediately 

 refilled to the same extent as before. About every ten minutes the 

 animal became restless, pawing with his feet, and protruding the head 

 as far as possible, ejecting about two pints of a most offensively sour 

 fluid, after which he was always easy, but he could not detect that the 



