. Gaseous exchanges in isolated muscle and the perfection of an apparatus for studying same . 5 of muscle after exp. grams. On trial, responded to nervestim., coil at 525 Electrodes on nerves in both chambers. IShocks as explained in Exp. 10. Temp. 29^ : Zerloi Length M Conditions ShoclLS Coil 00 ol itaJLoad Period SlgLt Left 1 30 min. Rest .225cc .28cc 2 60 by 450 550-445mn .35 nerve 3 30 Rest .13 .15 4 60 N .256 .264 5 60 gastroc .23 directly 390 165-145mn 6 60 Rest .22 .23 ^At beginning of 3rd per., R. gastroc. would not respondto ne:n/-8 stim
. Gaseous exchanges in isolated muscle and the perfection of an apparatus for studying same . 5 of muscle after exp. grams. On trial, responded to nervestim., coil at 525 Electrodes on nerves in both chambers. IShocks as explained in Exp. 10. Temp. 29^ : Zerloi Length M Conditions ShoclLS Coil 00 ol itaJLoad Period SlgLt Left 1 30 min. Rest .225cc .28cc 2 60 by 450 550-445mn .35 nerve 3 30 Rest .13 .15 4 60 N .256 .264 5 60 gastroc .23 directly 390 165-145mn 6 60 Rest .22 .23 ^At beginning of 3rd per., R. gastroc. would not respondto ne:n/-8 stim ,although it would to direct; coil at 155 m m. ,R. muscle would no longer give response to direct stim,;natural color, not stiff. L. muscle readily responded to direct jstim., coil at 140 ; natural color, not stiff. In this experi-ment, the L. gastroc. durin^^ contraction hung free from v/al] ofchamber. ,j - 118 - ^liH-W^ti-MIUl|HU!l|l^jlMI|IM-!.!.M||l|M!!l]ll||l PUtc Re ^ \ muscle at rest, qreen-. canTrRtct(^ n^ln — Uo / Color^J coluM€s diTjoot—dimldlhn periods. > Mmmj of Improvements in j^ 1. The apparatus here described possesses all of the advantagesof that used by Blackman, by Fletcher, and by Stanley (seepages 7-11 ). 2. In addition to the above it possesses the following advan-tages introduced by us: (a) A new method of absorption by double V/inkler spirals. (b) The employment of the double spiral makes it possibleto use v/eaker standard solution, thereby increasing the delicacy cLe. of the ^temination. (c) The possibility of employing a faster rate of aircurrent than could be used in any apparatus previously described. (d) By means of this faster air current, to remove theCC^ more promptly from around the muscle. (e) By means of this faster air current, to divide theexperiment into shorter periods, if so desired. (f) To obtain a higlrier degree of accuracy in the estima-tion of the COg than has hitherto been found f
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