British medical journal . Fjg. 4.—One of the legs of Sarcoplcs ^enliei,y. about 450. showing the stalked sucker andtbe cnrious * Fig. 5—A diagrammatic view of the tunnel Diatle by tbe femaleof Sarcoptes scabici, with the eggs she has laid Ijehind her as sheburrows deeper and deeper. Tile black lots represent theexcrement. the skin and soon tunnels into the epidermis of its host,wliere it moults and transforms about the ninth day intoa four-legged nymph. At the end of another six days theniites moult again, and at this period one can distiuguishnymphs of two sizes, the larger
British medical journal . Fjg. 4.—One of the legs of Sarcoplcs ^enliei,y. about 450. showing the stalked sucker andtbe cnrious * Fig. 5—A diagrammatic view of the tunnel Diatle by tbe femaleof Sarcoptes scabici, with the eggs she has laid Ijehind her as sheburrows deeper and deeper. Tile black lots represent theexcrement. the skin and soon tunnels into the epidermis of its host,wliere it moults and transforms about the ninth day intoa four-legged nymph. At the end of another six days theniites moult again, and at this period one can distiuguishnymphs of two sizes, the larger female and the smallermale. Within a mouth after hatching the Sarcopks hasbecome adult and the sexes are occupied in seeking eachother on the surface of the skin, and it is in this stage thatthey are easily passed by personal contact from oneindividual to another. Many animals suffer from Sarcoptes, and the fact thatthis genus can be transten-ed to man from the horse, theox, the sheep, the goat, the dog. the cat, the camel, tholion, etc., is a slight argument in favour of their being onespecies. There is another undoubtedly distinct speci
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectmedicine, bookyear185
