PHYSIOLOGY OF SMOOTH AND STRIATED MUSCLE 



557 



Experiment 32 

 February 8, 1911 

 Sartorius of bull-frog 23, weighed 

 fresh 0.152 gram 

 11.52 A.M. immersed in Ringer 

 1.30 P.M. weighed 0.143 gram 

 2.00 P.M. weighed 0.142 gram 

 2.08 P.M. weighed 0.140 gram 

 2.16 P.M. weighed 0.1405 gram 

 2.24 P.M. weighed 0.140 gram 

 2.32 P.M. weighed 0.140 gram 

 2.40 P.M. weighed 0.141 gram 

 2.48 P.M. weighed 0.139 gram, trans- 

 ferred to half strength 

 Ringer 

 2.56 P.M. weighed 0.148 gram 

 3.04 P.M. weighed 0.153 gram 

 3.12 P.M. weighed 0.1565 gram 

 3.20 P.M. weighed 0.159 gram 

 3.28 P.M. weighed 0.1615 gram, still 



very highly irritable 

 9.38 A.M. February 9, weighed 0.178 

 gram, still highly iritable 

 1.38 P.M. weighed 0.174 gram, still 



very highly irritable 

 Temperature varied between 18° and 

 19° 



Experiment 33 

 February 8, 1911 



Stomach muscle of bull-frog 23, 

 weighed fresh 0.260 gram 

 12.00 M. immersed in Ringer 

 1.34 P.M. weighed 0.271 gram, fibers 



considerably lengthened 

 2.04 P.M. weighed 0.260 gram 

 2.12 P.M. weighed 0.252 gram 

 2.20 P.M. weighed 0.246 gram 

 2.28 P.M. weighed 0.243 gram, fibers 



shortened 

 2.36 P.M. weighed 0.240 gram 

 2.44 p.m. weighed 0.240 gram 

 2.52 P.M. weighed 0.240 gram, fibers 

 now much shortened, 

 transferred to half 

 strength Ringer 

 3.00 P.M. weighed 0.243 gram 

 3.08 P.M. weighed 0.245 gram 

 3.16 P.M. weighed 0.250 gram 

 3.24 P.M. weighed 0.253 gram 

 3.32 P.M. weighed 0.256 gram, fibers 

 somewhat longer than at 

 2.52, still very highly irri- 

 table 

 9.43 a.m. February 9, weighed 0.307 

 gram, fibers considerably 

 lengthened 

 1.43 P.M. weighed 0.302 gram, fibers 

 still considerably length- 

 ened and highly irritable 

 Temperature varied between 18° and 

 19° 



