146 THE CAKADIAN HOESB 



will be found about three inches below the ear, between 

 it and the nostril. 



The following drench should be given : — 



Barbadoes aloes, . . . 6 drachms, 

 Carbonate of soda, . . . half an ounce, 

 Croton beans finely powdered, . '15, 



shaken up in a quart of warm water. 



Three drachms of aloes may be given every three hours 

 with copious injections every hour, till the bowels are freely 

 opened. 



Sedatives should also be used — such as extract of 

 hyoscyamus and calomel, a drachm of each shaken up 

 in a little thin gruel, given every two hours. Seldom is 

 repetition of blood-letting advisable ; cold water should be 

 constantly applied to the head ; a small hose made to play 

 upon it in a constant stream, where it is convenient, will 

 be found very useful. 



MEGRIMS OE VEETIGa 



The form of nervous complication known as megrims is not 

 uncommon in Canada. Its nature is but imperfectly deter- 

 mined. 



Causes. — It is often connected with worms or other de- 

 rangements of the stomach or bowels, said also to depend on 

 over-accumulation of blood in the head. The late Professor 

 John Barlow found tumours in the choroid plexus of the 

 brain. In these cases, it is often connected with over-feed' 

 ing, and its consequence, derangement of the digestive organs. 

 It is most commonly seen in harness horses, usually during 

 hot weather, occurs generally on a heavy pull 'going up hill ; 

 probably from pressure ,of the collar interrupting the return 

 of blood from the head, or " the long continued constraint 

 the bearing-rein puts the head to," may prove the exciting 

 causes in animals predisposed to it. 



