SUGAR-MITES. 



mites are sure to be found in immense numbers, and as they 

 are equipped with all kinds of tools to reduce the fodder to 

 dust, and as such spoiled material is only found in stables 



Fig. 52. — Tyroglypbiis longior Gervais. 

 Greatly enlarged. Original. 



not w^ell cared for, it is not so very strange that animals 

 forced to live in such places will soon sho^^ the presence of 

 such mites by their restlessness and scabby appearance. 



Unrefined sugar sometimes swarms \vith minute mites 

 {Tyroglyphus {Acarus) sacchari) and Mr. Cameron of Dublin 

 counted five hundred of them in ten grains of sugar, which 

 means that one pound of sugar harbored more than one 

 hundred thousand of these minute beings (fig. 53). This is 

 a decidedly bad case of adulteration! The disease known as 

 "grocer's itch" is said to be caused by the presence of such 

 mites, which, like the true itch-mites, burrow under the skin 

 of the hands of persons frequenth' handling such sugar. 



Dr. Packard received a peculiar Cheletus-like mite (fig. 

 54? shows an allied species) froin New Orleans, said to have 

 been extracted from the human face. "Its body is oblong 

 and square behind; the head is long and pointed, while the 



