. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. ,â 178 ANIMAL PHTBIOLOOT. of air, which, it will be apparent, must be capable of communi- cating very slight changes if the apparatus responds readily to the alterations in volume of the inclosed air. Fig. 175 represents a Marey's tambour, which consists essen- tially of a rigid metal
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. ,â 178 ANIMAL PHTBIOLOOT. of air, which, it will be apparent, must be capable of communi- cating very slight changes if the apparatus responds readily to the alterations in volume of the inclosed air. Fig. 175 represents a Marey's tambour, which consists essen- tially of a rigid metallic case provided with an elastic top, to which a lever is Attached, the whole being brought into com- munication with a column of air in an elastic tube. The work- ing of such a mechanism will be evident from Figs. 174 and Flo. 178.âTMqboun of Mkrejr arfwind (or tnnwrnlMton of mormnMit (â¢ftar McKendrick). a, neiMag tambour; b, ImlU-ruDber tube; e. regiitwring tambour; d, nplnl at wire, owlBg to elMtlcity at which, when toniion is removed from a, the leTer Mcenda. The greatest danger in the use of such apparatus is not fric- tion but oscillation, so that it is possible that the original move- ment may not be expressed alone or simply exaggerated, but also complicated by additions, for which the apparatus itself is responsible. Apparatus of this kind is not usually employed much for experiments with muscle; such an arrangement is, however, shown in Fig. 174, in which all will be seenâ^a metronome, the pendulum of which, by dipping into cups containing mercury, makes the circuit. Such or a simple clock may be utilized for indicating the longer intervals of time, as seconds. A Single Simple Muscular Contraction. Xqtriamtal Tkoto.âThe phases in a single twitch or muscu- lar contraction may be studied by means of the pendulum. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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License: Licensed
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
