British medical journal . y have been materially vitiated by theomission. INSECTS AND WAR: Ill.— a. E. SHIPLEY, , , SIASIEK OF CUIUSIS COLLEaE, CAMBRIDGE. Marke but this flea, and marke in little that which eleuyst me is;It sucked me lirst, and now sucks iu this flea our two bloods mingled hee. Dr. DONNE. The fact, now fully established, that the bubonic plagueis conveyed to man from infected rats or from infectedmen by Heas has taken that wingless insect out of thecategory of those animals which it is indelicate to discuss. No doubt, as Mr. Bombey says, Na
British medical journal . y have been materially vitiated by theomission. INSECTS AND WAR: Ill.— a. E. SHIPLEY, , , SIASIEK OF CUIUSIS COLLEaE, CAMBRIDGE. Marke but this flea, and marke in little that which eleuyst me is;It sucked me lirst, and now sucks iu this flea our two bloods mingled hee. Dr. DONNE. The fact, now fully established, that the bubonic plagueis conveyed to man from infected rats or from infectedmen by Heas has taken that wingless insect out of thecategory of those animals which it is indelicate to discuss. No doubt, as Mr. Bombey says, Nature is on thewhole a very respectable institution; but there woretimes when she presented herself in a form not to betalked about, and until a few years ago the liea was such aform. Hence few but siiecialists have any clear ideacither of the structure or of the life-history or of theliabits—save one—of the flea. Fleas are temporarily parasitic on many mammals andbirds, but some mammals and some birds are much freer. Fig. Pulcx irrilanx. femali?. The legs of the left side only ereshown. (.VI tcr a drawing by A. Dampf.) Enlarged. from fleas tlian others. As the flea is only on itshost for part of the time, it has to put in the restof its existence in some other place, and this in thecase of the human flea is usually the floor, and inthe case of bird-fleas the nest; from these habitats thevcan easily regain their hosts when they retire torest. But large numbers of ruminants—deer, cattle,antelopes, goats, wild boars—sleep in different places eachnight, and to this is probably due the fact tliat, with theexception of two rare species, one taken in NorthernChiu;i. and the other in Transcaucasia, the ruminantsiuave furnished descriptive science with no fleas. Both of these ruminant fleas are allied to the burrowing fleas orchigoes. I know I shall not be believed when I say thatthe same is true of monkeys, but I do tliis on theundoubted authority of Mr. Harold Hussell, w
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectmedicine, bookyear185
