522 Veterinary Medicine. 



shoulders of the old boar may serve to illustrate a physiological 

 hypertrophy. The writer has seeu thickeniug of the skiu iu the 

 seat of an incision made in spaying the pig and the deposition of 

 earthy salts so as to form a distinct calcification. 



Treatment is very unsatisfactory, yet something may be done 

 by laxatives, diuretics, regular exercise, an evenly applied elastic 

 bandage when in the stable, massage and the use of astringent 

 and dilute iodine ointments. It is much more important to pre- 

 vent the lesion by cutting short tlie morbid condition on which it 

 depends. When developed, attention is usually given to prevent 

 its advancement and to utilize the animal at slow work. 



ICHTHYOSIS. FISH-SKIN DISEASE. 



This consists in a scaly formation of the epidermis which is 

 also formed in excess, and is supposed to be dependent on dis- 

 ordered trophic innervation. In new born calves suffering in 

 this way Van Stettin found an excess of phosphate of lime in the 

 epidermis. The calves usually die in a few days. 



FURUNCULUS. BOIL. 



Definition, pustule with necrotic core. Digital region. Microbes. Symp- 

 toms : Prevention : antisepsis. Treatment : phenol, iodine, alcohol, boric 

 or salicylic acid, iron, bitters, calcium sulphide, sulphur, sodium sulphite. 



A deep seated inflammation of the derma resulting in suppura- 

 tion with the formation of a central adherent necrotic slough or 

 core. 



Boils are not uncommon on the digital region of horses in 

 winter ; or where the parts are exposed to street mud containing 

 an abundance of decomposing organic matter. They are unques- 

 tionably due to pyogenic microbes, and have been largely asso- 

 ciated with staphylococcus pyogenes aureus. As they often come 

 out in successive crops, it may be assumed that the second focus 

 is infected from the first, or that there is a special susceptibility 



