v 559 ) 
•‘The first contractile substance of the sartorius”, he says, “responds 
nuickly with a contraction when subjected to a 1 percent solution 
of potassium chloride. Calcium chloride in a 1 percent solution 
produces no contraction of the first contractile element of the sar- 
torius, gives rise to a slow contraction of the second contractile 
element, and produces quite a vigorous contraction of heart muscle. 
We had, therefore, to expect that excitation of muscles immersed 
in calciumchloride would make the quantity of creatine increase^ 
Indeed this appeared to be the case. One basin was now filled with 
Ringer’s solution, the other with a solution of Ca Cl, isotonic with 
it. For the rest the experiments were made in quite die same way 
as the preceding one. The results are the following: 
Ringer’s sol. 
I 3.177 
II 3.193 
III 3.340 
IV 3.040 
V 3.156 
CaCl 2 0.72 °/ 0 Difference 
3.820 0.643 
3.703 0.510 
3.894 0.554 
3.647 0.607 
3.501 0.345 
In the first four experiments the contraction of the muscles immersed 
in Ca Cl left off before the half hour was past and these musch* 
showed distinct stiffness. In'V the contractions;ofthe 
in CaCl, were at the end of the experiment clearly to be observea 
and stiffness was not to be perceived. - were 
To the examination of the action of rbodane “ nd 
led by a communication of von M and Schwarz ), ifrom whc^ 
it appeared that these substances, like e.g. vera n , snnDOsition 
siderably increase the labouring faulty of the a>u^ ; The S “f^ 
that a,L here 
r 
Ringer’s solution, the other in a vessel with the ^mehqu^m^ch 
some citras coffeini was dissolved, or o * « h muS cles under 
had been replaced by rhodan-natnum After ** ““T' 
>>»——kscs .*^ 
now and then, by means of the ne , Now while 
couple of electrodes excited with anuc^ ^ 
ImTt TSi- iJS or - even somewhat lengthened. 
ids Archiv, GXX1X, S. 525. 
