4 oo VETERINARY LECTURES 



various animals. Thus, mange must be considered under the three 

 heads: (i) Superficial, (2) Middle, and (3) Deep-seated. From this 

 fact it may be easily understood how some attacks of mange readily 

 yield to treatment, whilst others verge on the incurable. It is, there- 

 fore, necessary to ascertain what class of mange has to be dealt with 

 before suitable treatment can be adopted. Mange usually attacks 

 the horse in the region of the mane, head, and tail, causing much 

 irritation and discomfort to the animal, and when the hook-like 

 appendages on each parasite are considered, it is not a matter for 

 surprise. Symptoms. — The animal appears dull, and is much inclined 

 to rub the affected parts whenever it has the chance. Rubbing the 

 fingers gently over the irritated places causes the animal to move 

 the lips and muzzle with an expression of great pleasure. Close 

 examination also shows a number of small papules containing a 

 small quantity of serous fluid, which soon escapes, forming scabs 

 or crusts. 



680. Treatment.— All animals affected with mange should be care- 

 fully isolated, since — as will be quite obvious to all from its parasitic 

 nature — the disease is a highly contagious one. The animal must 

 be carefully washed with some parasiticide. Any of the non- 

 poisonous dips may be used, but dip containing arsenic must not, on 

 any account, be used where the skin is at all excoriated or broken. 

 Jeyes' fluid or Little's phenyle— 1 pait to 30 or 40 parts of cold 

 wa ter — has a very good effect, and, in bad cases, dressing with a 

 mixture of whale oil, black sulphur, and spirits of tar, may be 

 attended with good results. Iodine preparations are very useful, 

 but nearly every practitioner has his own favourite remedy. The 

 stables, boxes, clothing, harness, etc., used by the infected animals 

 must also be carefully washed and constantly disinfected. For the 

 dog, I think nothing is better than the application of a mild prepara- 

 tion of the green iodide of mercury — say 30 grains to 1 ounce of lard 

 or vaseline. A simple wash can be made by boiling a quantity of 

 foxglove leaves (digitalis), which, when cold, should be applied to the 

 parts. Should any constitutional disturbance be present, it must be 



