564 



EDWARD B. MEIGS 



Experiment 56 

 April 3, 1911 

 Sartorius of bull-frog 33, weighed 

 fresh 0.173 gram 

 10.33 A.M. immersed in Ringer 

 1.42 P.M. weighed 0.160 gram 

 1.50 P.M. weighed 0.159 gram 

 1.58 P.M. weighed 0.158 gram 

 2.06 P.M. weighed 0.158 gram 

 2.14 P.M. weighed 0.158 gram, im- 

 mersed in half strength 

 Ringer 

 2.22 P.M. weighed 0.169 gram 

 2.30 P.M. weighed 0.175 gram 

 2.38 P.M. weighed 0.180 gram, still 



very highly irritable 

 2.46 P.M. weighed 0.184 gram 

 2.54 P.M. weighed 0.187 gram 

 3.02 P.M. weighed 0.1905 gram 

 3.10 P.M. weighed 0.1905 gram, still 



very highly irritable 

 3.18 P.M. weighed 0.193 gram 

 3.26 P.M. weighed 0.195 gram 

 3.34 P.M. weighed 0.196 gram 

 3.42 P.M. weighed 0.198 gram 

 3.50 P.M. weighed 0.199 gram 

 3.58 P.M. weighed 0.199 gram 

 4.06 P.M. weighed 0.199 gram, still 



very highly irritable 

 4.50 P.M. weighed 0.205 gram, still 



very highly irritable 

 10.22 A.M. April 4, weighed 0.202 gram, 

 fibers somewhat short- 

 ened, but still highly irri- 

 table 

 Temperature varied between 15° and 

 18° 



Experiment 57 

 April 3, 1911 

 Portion of stomach of bull-frog 33, 

 weighed fresh 0.262 gram 

 10.37 A.M. immersed in Ringer 

 1.46 P.M. weighed 0.284 gram, fibers 

 not much changed in 

 length 

 1.54 P.M. weighed 0.277 gram, fibers 

 slightly shorter than at 

 1.46 

 2.02 P.M. weighed 0.270 gram 

 2.10 P.M. weighed 0.267 gram 

 2.18 P.M. weighed 0.262 gram, fibers 

 slightly shorter than at 

 1.54, immersed in half 

 strength Ringer 

 2.26 P.M. weighed 0.262 gram 

 2.34 P.M. weighed 0.260 gram, fibers 

 rather shorter than at 

 2.18 

 2.42 P.M. weighed 0.264 gram 

 2.50 P.M. weighed 0.266 gram, fibers 

 not much changed in 

 length 

 2.58 P.M. weighed 0.268 gram 

 3.06 P.M. weighed 0.272 gram, fibers 

 now somewhat longer than 

 at 2.50 

 3.14 P.M. weighed 0.271 gram 

 3.22 P.M. weighed 0.271 gram 

 3.30 P.M. weighed 0.273 gram 

 3.38 P.M. weighed 0.275 gram 

 3.46 P.M. weighed 0.274 gram 

 3.54 P.M. weighed 0.278 gram 

 4.02 P.M. weighed 0.278 gram 

 4.10 P.M. weighed 0.278 gram, fibers 

 not much changed in 

 length since 3.06 

 4.54 P.M. weighed 0.288 gram, fibers 

 slightly longer than at 

 4.10 

 10-. 26 A.M. April 4, weighed 0.311 gram, 

 fibers were longer than at 

 4.54 P.M. yesterday, but 

 shortened as result of 

 handling and drying; mus- 

 cle still quite irritable 

 Temperature varied between 15° and 

 18° 



