PAKALTSIS— KXTERNAL PABASITKS. 99 



\a connected with debility, it is very necessary to maintain the 

 strength by extra food ; give, therefore, more than usual of cooked 

 meat, and in small quantities at frequent intervals. The medicine 

 relied on in these cases are tonics ia general and stiychnine — the 

 active principle of nux vomica — which has a special power over the 

 muscles and nerves. Igr. of powdered nux vomica, or j^gr. of 

 stiychnine, combined with 2gr. of extract of gentian, and Igr. of 

 quinine, made into a pill, is the dose for a 201b. dog. It is almost 

 needless to observe that very great care must be used ia com- 

 pounding pills containing a minute quantity of such a powerful 

 drug as strychnine. A dose should be given twice a day. Syrup 

 of the phosphates, with strychnia, called Easton's Syrup, is often 

 of great service in relieving mild cases of paralysis; and gal- 

 vanism is sometimes beneficial. 



In applying the electric battery in cases of paralysis the following 

 is the mode : Procure two earthenware vessels (metal ones will not 

 do), and cover the bottom of each with cold water. Put the two 

 handles of the battery in the water, one in each vessel, and start tha 

 appliance. Place one foot of the dog in each vessel, both hind feet 

 or both fore feet, as the case may suggest, or the right fore foot and 

 left hind one and so on. The water ia the vessels should be just 

 sufficient to cover the feet. Five to ten minutes, twice a day, ia 

 long enough for the battery to be employed. 



In paralysis of the hind legs the bladder generally participates;' 

 or the animal being unable to stand, cannot pass the urine freely. 

 In such cases the catheter must be passed night and morning, or the 

 the animai held up, and pressure applied to each side, in the region of 

 the bladder, to expel its contents. To prevent bed sores, and con- 

 gestion of one lung, the animal must be turned over occasionally. 



PARASITES, EXTEKH AL.— The number and variety of 

 parasites that make one part or another of the dog their habitat is 

 very great. These are divided into external and iatemal ; in the 

 former two distinct mites, producing two very distinct forms of 

 the mange, have already been referred to, and the internal parasites 

 will be treated under WORMS. 



There is no dog-owner of much experience who is not aware that 

 great care and cleanUnesa are needed to prevent the introduction of 

 these unwelcome visitors, or who has not had to pay smartly for their 

 extermination, if his kennels have been leglected. The parasites to 

 which I particularly wish to direct attention are four in number — 

 the louse, the flea, the tick, and the harvest-bug. 



Lice, — Two species of lice (F5g. 16) infest the dog. One is the 



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