On diseases of the skin . long, lancet-shaped haustellum. Judg-ing from the organization of this acarus,I should conclude that its presence onthe skin of man was the result of acci-dent, that it drew its subsistence habit-ually from some other source, but thatit was quite capable of piercing thecuticle, and obtaining its food fromthe juices of the human body, and inthis way giving rise to considerable ir-ritation. Probably it is to this speciesof acarus that Rayer refers when heobserves that symptoms similar tothose produced by pediculi, may beoccasioned by aearides, an insect very closely all


On diseases of the skin . long, lancet-shaped haustellum. Judg-ing from the organization of this acarus,I should conclude that its presence onthe skin of man was the result of acci-dent, that it drew its subsistence habit-ually from some other source, but thatit was quite capable of piercing thecuticle, and obtaining its food fromthe juices of the human body, and inthis way giving rise to considerable ir-ritation. Probably it is to this speciesof acarus that Rayer refers when heobserves that symptoms similar tothose produced by pediculi, may beoccasioned by aearides, an insect very closely allied to the ixodes, butcapable, according to Bory St. Vincent, of forming a new class,characterized by a small sucker, accompanied with two feelers, con-sisting of four joints. M. Bory St. Vincent has observed theseinsects upon a woman of about forty years of age, who, after havingexperienced violent itchiness over the whole body, was very muchastonished to see thousands of aearides on all the parts which she Th- Stcckliolm acarus, viewed on its under surface, and magnified :s8 diameters.


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Keywords: ., bo, bookcentury1800, bookdecade1860, booksubjectskin, bookyear1865