DOMESTIC ANIMALS. 159 



foundered, but a part of the treatment being the immer- 

 sion of the feet in a tub of hot water for 4 hours each 

 day, the acute symptoms were relieved by the time of 

 the next operation two days after. I mention this 

 case because at first sight, and without a knowledge of 

 the minute anatomy of the foot, it would appear that 

 the use of the jack screw would accomplish expansion 

 of the heels much more completely and easier than any 

 other means. I have no doubt that there are at pres- 

 ent men traveling through this and other countries 

 making money by the use of such injurious devices, for 

 the field for their labors is unlimited. 



Fig. 48. Dr. Roberges' Spring inserted in Hoof. 



Another ingenious device has been invented by Dr. 

 Roberge, Fig 48. It consists of a steel spring, which, 



