An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 289.—Larva (after Anderson).. Male aearus (after Anderson). meters long, containing fine yellowish granular contents, from which theyoung acari are developed. The female is supposed to live three or four months. She bores andbores and continues to lay eggs during her whole lifetime. The number ofeggs which she lays has been estimated at from twenty-four (Hebra) to fifty(Gudden). After she has once entered her canal she is prevented from re- SCABIES. 1193 tracing her steps by the dorsal tubercles or spine


An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 289.—Larva (after Anderson).. Male aearus (after Anderson). meters long, containing fine yellowish granular contents, from which theyoung acari are developed. The female is supposed to live three or four months. She bores andbores and continues to lay eggs during her whole lifetime. The number ofeggs which she lays has been estimated at from twenty-four (Hebra) to fifty(Gudden). After she has once entered her canal she is prevented from re- SCABIES. 1193 tracing her steps by the dorsal tubercles or spines which are on her to fifteen eggs are usually found in a furrow. Five to fourteen daysintervene between the laying and the hatching of an egg. Fourteen daysare required for the young acari to develop. The male acari (see Fig. 290) run over the surface and hide under thecrusts and scales. The larvae,, or young acari, upon being released from theireggs and furrows, wander over the surface of the skin, the male meetingand impregnating the female, who then, as we have seen, begins to burrowher cuniculus and l


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Keywords: ., bookcentury1800, bookdecade1890, booksubject, booksubjectsyphilis