IMPETIGO LAEVALIS. 139 



grass, especially when there is an abundant dew, suffer from 

 excoriations and pustules. I have seen many cases associ- 

 ated with considerable fever, but all symptoms disappeared 

 on removing the cause, viz., changing the diet. 



Those who can read German will find good descriptions of 

 impetigo larvalis in German works, under the names ' Maul- 

 grind/ ' Lammergrind,' ' Kalbergrind/ ' Teigrnaul,' &c. 



PUSTULAR ERUPTIONS OF THE HEELS IN HORSES. 



IMPETIGO SPARSA DIGITOEUM (GREVE). 



This is a very common morbid state in clipped horses, and 

 in well-bred animals with a thin skin, which are ill managed. 

 The heels become hot and swollen ; pustules then form, burst, 

 and leave behind a sore ulcerating surface. There is stiff- 

 ness of gait, pain, and sometimes itchiness. During wet 

 seasons, especially when horses' legs are much trimmed, the 

 disease assumes a chronic and inveterate form. It may pass 

 on to grease, or fissures in the skin form, with hard edges, 

 and a slow sloughing process tends to incapacitate the 

 animal for work. 



The treatment in these cases consists in moderate diet, 

 cleanliness, keeping the limbs clean and dry, and using mild 

 lotions similar to those recommended for grease. Advantage 

 is derived from the use of oxide of zinc in powder, which may 

 be applied alone, or mixed with some finely-powdered starch. 



Under the name ' Impetigo Kodens/ the skin disease and 

 casting off the hoofs which occurs in poisoning by ergot have 

 been described by Greve, Hering, and others. 



GREASE IMPETIGO ERYSIPELATODES. 

 Greve applied the above name to the well-known disease, 

 grease, which Eoll has termed Paronychia impetiginosa. 



