570 



EDWARD B. MEIGS 



Experiment 75 

 April 18, 1912 

 Sartorius from small bull-frog 64, 

 weighed fresh 0.195 gram 

 11.30 A.M. immersed in 3.95 per cent 



dextrose solution 

 12.00 M. weighed 0.198 gram, fibers 



slightly shortened 

 12.30 P.M. weighed 0.219 gram 

 1.00 P.M. weighed 0.222 gram 

 1.30 P.M. weighed 0.223 gram 

 3.30 P.M. weighed 0.221 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 throughout this experi- 

 ment remained at 16° 



1 Ringer solution was not agitated 

 between 3.30 and 4.30 



Experiment 76 

 April 18, 1912 

 Stomach muscle from small bull- 

 frog 64, weighed fresh 0.263 gram 

 11.35 A.M. immersed in 3.95 per cent 



dextrose solution 

 12.05 P.M. weighed 0.270 gram, fibers 



somewhat lengthened 

 12.35 P.M. weighed 0.310 gram, fibers 

 somewhat further length- 

 ened 

 1.05 P.M. weighed 0.345 gram, fibers 

 markedly further length- 

 ened 

 1.35 P.M. weighed 0.392 gram, fibers 

 now very much length- 

 ened 

 3.35 P.M. weighed 0.480 gram, fibers 

 now enormously length- 

 ened 

 3.55 P.M. still quite irritable 

 10.05 A.M. April 19, weighed 0.480 gram, 

 fibers have about same 

 length as at 3.35 p.m. yes- 

 terday, still slightly irri- 

 table 

 Temperature throughout this experi- 

 ment remained at 16° 



Experiment 77 

 April 18, 1912 

 Sartorius from small bull-frog 65, weighed fresh 0.172 gram 

 10.25 A.M. immersed in 0.9 per cent KCl solution at 4° 



weighed 0.188 gram, fibers somewhat shortened 



weighed 0.204 gram, fibers now have original length, muscle somewhat 



stiff and gelatinous 

 weighed 0.215 gram 



weighed 0.258 gram, entirely unirritable, temperature of KCl solu- 

 tion has varied between 2° and 8°, muscle transferred to Ringer at 9° 

 temperature of Ringer is 11° 



April 19, weighed 0.196 gram, now quite irritable through whole extent, 

 not shortened and shows no sign of rigor. Temperature of Ringer 

 solution has risen gradually since 5.25 p.m. yesterday to 16° 



