THE DISEASES OP CATTLE. 297 



" Hydatids occur much less frequently in the brains of cattle 

 in Great Britain, than in other countries, as Youatt has cor- 

 rectly said, in his treatise on the * Diseases of the Ox/ It 

 occurs only in the young animals. Indeed, it obeys the same 

 laws that guide the development of the coenurus in the sheep ; 

 and it is a well-established fact, that it is only when animals 

 are growing, that the germs for the propagation of the bladder- 

 worms will be taken up, and carried to parts probably through 

 the blood. 



" The success attending the trephine, in cases of hydatids 

 in the brain of the ox, is very great and encouraging ; and not 

 only have I read interesting and convincing records on this 

 subject, but, in conversation with skilful and experienced veter- 

 inarians, I have learned that trephining is an operation often 

 to be relied upon." 



SHAKING PALSY. 



Shaking pals;^ is a condition of the animal economy known 

 to medical men as irregular, or abnormal, nervous action. It 

 generally occurs in cows of the nervous temperament, whose 

 digestive organs are deranged ; and, so far as my experience 

 goes, the disease is confined to imported stock, of the Alder- 

 ney breed. I lately attended an Alderney cow, the property 

 of Mr. Chenery, at the "Highland Stock Farm," Belmont. 

 The patient was suddenly attacked with symptoms of irregular 

 nervous action of the muscles of the chest and fore-legs, 

 simulating skaking palsy. The membranes of the eyes 

 were highly injected; pulse, jerking in unison with the 

 irregular muscular action ; external surface, extremities, and 

 horns, quite chilly; respirations, normal; pulse, small and 

 languid. 



I gave the patient three drachms of fluid extract of golden- 

 seal, and the same quantity of fluid extract of camomile 

 flowers. 



The spine and fore extremities were then irritated by the 

 application of tincture of capsicum. On visiting the animal, 

 the next day, I found her in better condition ; the tremulous 



