121 



A preparation composed of one part of oleate of copper, with four or five 

 parts of lard, is provin^^ very useful in cases of ringworm, and is well 

 worthy of further trial. In the accompanying picture A shows the filaments 

 and the little round spores of Favus ; B shows a hair invaded by the fungus 

 of the common ringworm, the round spores of which are seen covering its 

 surface ; C shows the spores of the ringworm in filaments, and also more 

 (highly magnified separately. 



The only disease for which ringworm is likely to be mistaken is one 

 -called circumscribed herpes (herpes circinatus), which is an eruptive skin 

 affection, characterised by the formation of rounded patches of little blebs. 

 In ringworm, however, scales are found round the single hairs, or in patches- 

 surrounding several hairs. This is not the case with herpes, which is a 

 non-contagious malady closely allied to eczema, and requiring the same 

 .treatment. 



URTICARIA OR SURFEIT. 



We may now consider the various kinds of non-contagious skin diseases of 

 the horse, viz.: surfeit, hide-bound, eczema, grease, cracked heels, mud 

 fever, mallenders and sallenders, and warts. 



By the term surfeit or urticaria, is^ understood a condition of the skin 

 characterised by the eruption of a number of irregularly circular or ovoid 

 • elevations, or lumps. 



These elevations are generally formed suddenly, and the parts most 

 commonly affected are the loins, neck, and hind-quarters. Surfeit in almost 

 all instances is due to impaired digestion, brought on by various causes. The 

 .affection is, as a rule, not characterised by great itching, though no doubt 



