226 ELEPHANTIASIS OF THE OX. 



sheer exhaustion. The skin of the digits is nodulated, and 

 ulcers form, which itch to a certain extent, and which the 

 animal licks constantly. The constitutional symptoms are 

 those of disturbed functions cows cease to yield milk, the 

 appetite is capricious, and so on. The disease is always 

 chronic, and lasts several months. Its treatment is attended 

 with very doubtful results, and success depends more on 

 judicious diet and cleanliness, than the use of medicines. 

 Some recommend occasional bleeding, but the majority are 

 opposed to this practice. Low diet is suggested for the 

 febrile stage, and setons have been inserted in the dewlap. 

 Active purgatives have been strongly recommended, and 

 locally the use of emollients, of healing ointments, &c. 



DISEASES ARISING FROM ANIMAL POISONS OF 



UNKNOWN ORIGIN, AND GIVING RISE TO 



ERUPTIVE FEVERS. 



Fevers associated with characteristic cutaneous manifesta- 

 tions are included under this head. They are measles, 

 scarlatina, variolous fevers, varicella, and that wide-spread 

 plague epizootic aphtha. Typhus has been included in the 

 list, but as it cannot be called a local disorder, we shall treat 

 of it elsewhere. They cannot be regarded as local disorders, 

 and might more properly be classed with systemic diseases 

 than with affections of the skin. 



MEASLES. KUBEOLA. MOEBILLI. 



Measles in the human subject has been defined to be "a con- 

 tagious febrile disease, characterised by catarrhal symptoms, 

 and the occurrence of a rash upon the skin about the fourth 

 day, without the disappearance of the fever." It has often 

 been confounded with small-pox. In this country the term 



