The Philosophical magazine; a journal of theoretical, experimental and applied physics . ., Baltimore, In this excellent paper 1 found clear statements showing thatits talented author had surmised the existence of some of thephysical facts which my experiments and observations haveestablished*. To show that anatomical facts conform to thehypothesis that the antennal fibrils are the auditory organs ofthe mosquito, I cannot do better than quote the following fromDr. Johnstons paper :— While bearing in mind the difference between feeling a noiseand perceiviny a vibration, we may safely assum


The Philosophical magazine; a journal of theoretical, experimental and applied physics . ., Baltimore, In this excellent paper 1 found clear statements showing thatits talented author had surmised the existence of some of thephysical facts which my experiments and observations haveestablished*. To show that anatomical facts conform to thehypothesis that the antennal fibrils are the auditory organs ofthe mosquito, I cannot do better than quote the following fromDr. Johnstons paper :— While bearing in mind the difference between feeling a noiseand perceiviny a vibration, we may safely assume with Carus—for a great number of insects at least—that whenever true audi-tory organs are developed in them, their seat is to be found inthe neighbourhood of the antenna. That these parts themselvesare in some instances concerned in collecting and transmittingsonorous vibrations, we hold as established by the observationswe have made, particularly upon the Culex mosquito; while webelieve, as Newport has asserted in general terms, that they servealso as tactile organs. Fig. The male niOi<(juit() diffcis considerably, as is well known,from the female, his body being smaller and of a darker colour, • A short time before the dcntli of inv friend Professor Apnssi/., he wroteme these words :— I can Imrdly express my deHj^ht nt reaclinp; your feel you have hit upon one of the most fertile mines for the elucidationof ft problem which to this day is a pu?./.lc to naturalists, the seat of theorfjau of iiearin); in Articulates. Prof. A. M. Mayci-s Researches in Acoustics. 383 and his head furnished with mitenrKB and paljji in a state ofgreater development (fig. 2). Notwithstanding the fitness ofhis organs for predatory purposes, he is timid, seldom enteringdwellings or annoying man, but restricts himself to damp andfoul places, especially sinks and privies. The female, on theother hand, gives greater extension to her flight, and, attackingour race, is the occas


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