. Gaseous exchanges in isolated muscle and the perfection of an apparatus for studying same . e chamber and ends in a dropper. 0,0 — Three-way cock at foot of each burette. P,P — Burettes, HCl on the left, bar^/ta on the right. R,R — Mercury cups, one on top of each burette. S,S —- Potash bulbs with bells to fit R,R. (The left one is shov4i clamped to one side).T,T — Mercury cups, receiving standard solutions from distribu-ting system, for each burette. .U —- Air outlet tube passing backward (starts from I just below Xy. W — Mercury cup on top of U for attaching long goose-necktube W (shown on


. Gaseous exchanges in isolated muscle and the perfection of an apparatus for studying same . e chamber and ends in a dropper. 0,0 — Three-way cock at foot of each burette. P,P — Burettes, HCl on the left, bar^/ta on the right. R,R — Mercury cups, one on top of each burette. S,S —- Potash bulbs with bells to fit R,R. (The left one is shov4i clamped to one side).T,T — Mercury cups, receiving standard solutions from distribu-ting system, for each burette. .U —- Air outlet tube passing backward (starts from I just below Xy. W — Mercury cup on top of U for attaching long goose-necktube W (shown on the right).—- Goose-neck exit tube joining V v/ith a Winkler-Kyll bulb(not shovm). X — Mercury cup on top to support indicator dropper Indicator dropper: (l)for indicator supply: (2)one-way cock:,(3) bell to fit X having the tube: (4)continuous with Y ,pasrsing through it. |Z — Mercury cup on top of air inlet tube to spiral. The bell on 1^fits into this while the cup on A connects with the exit tube fromthe muscle chamber (not shown) ? —=—=—=—===—. Photograph 2. - 16 - The apparatus as a whole consists mainly of a combination ofstandard parts, found individually in any catalogue, simply connect- j ed in the proper manner by means of glass tubing, etc., and heldin place by suitable clamps. With the exception of the musclechamber and the titration chamber, which were made to order at jj small expense, all other parts and connections were made in the laboratoiiy, using an oMinary Bunsen blov/pipe. Practically all of the standard parts have remained intact and can be removed fromthe apparatus at any time and put to other usages. The glasstubing generally used has an inside diameter of 3 m m. With thissize tubing, no blocking up by moisture-collection ever happens,as is the case in Fletchers apparatus with tubing of 1 bore. The apparatus is set up on an ordinary laboratory benchbuilt solidly against the wall. Projecting from the wall,


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmuscles, booksubjectt