PHY'SIOLOGY OF SMOOTH AND STRIATED MUSCLE 



571 



Experiment 78 

 April 18, 1912 

 Sartorius from small bull-frog 65, 

 weighed fresh 0.185 gram 

 11.40 A.M. immersed in 7.5 per cent lac- 

 tose solution 

 12.10 P.M. weighed 0.186 gram, fibers 



not changed in length 

 12.40 P.M. weighed 0.191 gram 

 1.10 P.M. weighed 0.200 gram 

 1.40 P.M. weighed 0.199 gram 

 3.40 P.M. weighed 0.193 gram, shows 

 barely perceptible irri- 

 tability; transferred to 

 Ringer 

 4.30 P.M. now fairly irritable^ 

 9.30 A.M. April 19, now quite irritable 

 Temperature remained throughout 

 this experiment at 16° 



1 Ringer solution was not agitated 

 between 3.40 and 4.30 



Experiment 79 

 April 18, 1912 

 Stomach muscle from small bull-frog 

 65, weighed fresh 0.192 gram 

 11.45 A.M. immersed in 7.5 per. cent 



lactose solution 

 12.15 P.M. weighed 0.201 gram, fibers 



somewhat lengthened 

 12.45 P.M. weighed 0.228 gram, fibers 

 somewhat further length- 

 ened 

 1 . 15 P.M. weighed 0.252 gram, fibers 

 markedly further length- 

 ened, especially at cardiac 

 end 

 1.45 P.M. weighed 0.282 gram, fibers 

 now very much length- 

 ened 

 3.45 P.M. weighed 0.306 gram, fibers 

 somewhat longer than at 

 1.45 

 4.10 P.M. still quite irritable 

 10.15 A.M. April 19, weighed 0.256 

 gram, fibers a little shorter 

 than at 3.45 p.m. yester- 

 day, cardiac end no longer 

 irritable, pyloric end very 

 slightly so 

 Temperature remained throughout 

 this experiment at 16° 



