74 



]ouTnal of Agriculture. 



[8 Feb., 1907. 



A longitudinal or crucial incision is lirst made through the skin, suffi- 

 ciently large to allow of the introduction of the trephine. The instrument 

 is then worked round until a circular piece of bone is removed, when the 

 foreign material may be extracted with forceps or syringed out. 



The principal seats of operations are — {a) The cranial cavity, for the 

 removal of the cyst of the cannrus cerebralis parasite in sheep, or of 

 splinters of bone, or clots of blood, or accumulations of pus, on the brain 

 surface; {b) the nasal cavity, for the removal of the maggots of the nasal 

 flv {oesirus ovis), or of polypi ; (c) the facial sinuses, for the removal of 

 accumulations of pus which occur in nasal gleet, ot for the purpose of 

 molar tooth extraction by punching. 



handle. 



The after treatment of the wound is not troublesome. A plate of bone 

 tends to form very rapidly, and in many cases of nasal gleet difficulty is 

 experienced in keeping the wound open sufficientlv long to allow of the 

 remo\-al of the pus that is formed until the suppurating mucous membrane 

 is l>rought into a normal condition bv treatment. 



II.— Methods and Practices. 

 Bandaging and Massage. 



Apart from the ordinary circumstances under which it is practised as 

 a stable custom and method, bandaging plavs an important part in the 

 auxiliary treatment of many diseases of an inflammatorv character. 

 Woollen bandages are, for instance, verv useful in maintaining equable 

 circulation in the limbs, and so retarding internal congestions. Straw- 

 rope bandages are also applied for the same purpose. 



Facility m properly applying bandages can only be attained by prac- 

 tice, but the advice may be giveni that both edges of the bandage must 

 alwavs be kept taut, either bv slanting the bandage to suit the inequalities 

 of the limb, or bv making a half-turn of the web. Most difficulty is 

 experienced in bandaging joints capable of great flexion, such as the knee 

 and hock, but if the above advice is adhered to, a firm and comparati\elv 

 immovable bandage may be applied. 



Just a word mav be here said on the common practice of bandaging the 

 legs of light horses. The application of a moderatelv tight bandage after 

 work is an advantage, in that it assists in supporting the wearied joints 

 and tissues at a time Avhen they are temporarily played out. and so tends 



