54 MITE PARASITES. 



small red papules exist where many Lave been irri- 

 tating. A white, silvery powder will also be noticed 

 upon the perches and in various other places (the 



exuviae of the mites), if the mites are present in great 

 numbers. 



They have also been found in the ear of a cow — 



the cow-shed only being separated from the hen-roost 



by a plank partition (Schumacher). 



Prevention and Treatment. 



In the exceptional cases just referred to, both in 

 fowls and animals, there is no solution so successful 

 as the following: — Olive oil (100 grammes), ether 

 (30 grammes), naphthol (10 grammes). This mix- 

 ture of Nocard's I have always found most potent in 

 all parasitic auricular affections. 



Eeoardino- the ordinarv attack of this mite on 

 Poultry, cleanliness again is one of the most im- 

 portant preventative measures. The constant use of 

 lime-wash, and the cleaning every now and then of 

 the perches and nests with boiling water and some 

 disinfectant, will help to keep dowm this too abundant 

 nocturnal visitor. The use of paraffin or creosote 

 for the perches in any wash used has been found 

 most decisive in its effects. . 



On two occasions Schneider's suggestion of fumi- 

 gating the roosts with bisulphide of carbon, put in 

 small phials in corners where they cannot be upset 

 and then blocking up all cutlets, has been tried. 

 Although no mites attacked the birds afterwards for 

 some days, they appeared again shortly, the ova not 



