480 THE DISEASES AND DISOEDERS OF THE OX. 



summer, the pupa-case opens and the fly is set free, and then 

 proceeds, just as its progenitor did, to lay its eggs in the 

 nostrils of its victim, after which it perishes in due course in the 

 autumn. 



With regard to treatment, it is advisable to place the sheep 

 which are afflicted in a warm building, with the view of tempting 

 the grub to make its escape from the nasal sinuses. Snuff, 

 solution of common salt, infusion of tobacco, diluted vinegar, 

 or weak solution of turpentine, may then be introduced into thn 

 nose, in order that the maggots may be removed by the sneezing 

 which is caused by reason of the irritation set up by their pre- 

 sence. In order to remove those maggots which remain in the 

 sinuses, the best plan is to trephine the bones of the face 

 between the front of the eye and the middle line of the face, or, 

 if the sheep be possessed of horns, in front of the root of one. 

 The sinus should then be well syringed out with tepid water, 

 containing a small proportion of carbolic acid, until the noisome 

 parasites are quite washed out. Some have recommended that 

 the faces of the sheep of a flock should be smeared over with a 

 mild antiseptic ointment, such as that of carbolic acid, every few 

 days in July ; and also that the ground should be ploughed, in 

 order that the creatures may be buried while yet in the pupa 

 state. The former of these two suggestions is practicable, 

 but the latter would obviously be quite impossible in many 

 cases, and would be quite useless, unless it were carried out on 

 a very large scale. 



SUCTION r. 

 DISEASES OF THE ALIMENTARY SYSTEM. 



DISEASES OF THE MOUTH AND TONGUE— ACUTE 

 TYMPANITES, HOVEN. 



We now proceed to deal seriatim with the diseases of the 

 digestive organs, and with the prevention of them. 



It is our purpose to commence our review of the diseases on 

 the alimentary organs of the ox, with a consideration of the 

 common derangements met with in the mouth and tongue, and 



