British medical journal . Fig. 3.— of ar. flom^stica, X 40, dorsaland «ral view*:.a, -\p,t£vior end. (FromGoidou Hewitt.). tions are able to lay their eggs ten days later. Theappalling fecundity of such an insect explams tlie factthat in the hotter parts of the world nearly everythingseems to be half covered with proboscis of a fly can only suck in liquidfood, and when we seeit feeding on solid sub-stances, such as sugar,it has really dissolvedthe sugar by depositingsome saliva on it, and issucking up the sugarysolution so produced. Itnot infrequently regur-gitates its
British medical journal . Fig. 3.— of ar. flom^stica, X 40, dorsaland «ral view*:.a, -\p,t£vior end. (FromGoidou Hewitt.). tions are able to lay their eggs ten days later. Theappalling fecundity of such an insect explams tlie factthat in the hotter parts of the world nearly everythingseems to be half covered with proboscis of a fly can only suck in liquidfood, and when we seeit feeding on solid sub-stances, such as sugar,it has really dissolvedthe sugar by depositingsome saliva on it, and issucking up the sugarysolution so produced. Itnot infrequently regur-gitates its food in aspherical drop, which itgenerally reabsorbs. As we have seen, fliesare very susceptible totemperature, and witiithe approach of coldweather they either dioor retu-e to hiding placesin warm dwellings, andhere in a state of sus-pended animation theypass the winter of them un-doubtedly die in the_^ autumn, as bees die, of. old age; they are literallyworn out. But a greatnumber fall victims to aparasitic fungus calledEmpusa. Flies Idlled bythis fungus are frequentlyto be seen in autumn,hanging dead on windows, {trs
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectmedicine, bookyear185
