562 



EDWARD B. MEIGS 



Experiment 52 

 March 29, 1911 

 Portion of stomach muscle of bull- 

 frog 31, weighed fresh 0.255 gram 

 2.15 P.M. immersed in Ringer 

 3.27 P.M. weighed 0.266 gram 

 3.35 P.M. weighed 0.265 gram 

 3.43 P.M. weighed 0.266 gram 

 3.51 P.M. weighed 0.267 gram trans- 

 ferred to double strength 

 Ringer 

 3.59 P.M. weighed 0.2595 gram 

 4.07 P.M. weighed 0.243 gram, fibers 



much shortened 

 4.15 P.M. weighed 0.233 gram 

 4.23 P.M. weighed 0.231 gram 

 4.31 P.M. weighed 0.227 gram 

 4.39 P.M. weighed 0.223 gram 

 4.47 P.M. weighed 0.221 gram 

 4.55 P.M. weighed 0.222 gram, fibers 

 now very much shortened, 

 they show a marked tend- 

 ency to lengthen on 

 stimulation ;i transferred 

 to Ringer. 

 9.45 A.M. March 30, fibers consider- 

 ably longer than at 4.55 

 P.M. yesterday, and quite 

 irritable 

 Temperature varied between 20° and 

 21° 



1 See p. 509. 



Experiment 53 

 March 30, 1911 

 Portion of stomach muscle of green frog 32, weighed fresh 0.157 gram 

 11.00 A.M. immersed in Ringer 



12.00 M. weighed 0.175 gram, fibers considerably lengthened 

 1.00 P.M. weighed 0.185 gram 

 2.00 P.M. weighed 0.187 gram 

 3.00 P.M. weighed 0.190 gram 

 4.00 P.M. weighed 0.191 gram 

 5.00 P.M. weighed 0.189 gram 

 10.00 A.M. March 31, weighed 0.195 gram, fibers still lengthened, but shortened 



somewhat as the result of handling and drying 

 11.00 A.M. weighed 0.190 gram, fibers not much changed in length and still very 

 highly irritable 



Experiment 51 

 March 29, 1911 

 Sartorius of bull-frog 31, weighed 

 fresh 0.186 gram 

 2.19 P.M. immersed in Ringer 

 3.31 P.M. weighed 0.186 gram 

 3.39 P.M. weighed 0.185 gram 

 3.47 P.M. weighed 0.186 gram 

 3.55 P.M. weighed 0.1855 gram, trans- 

 ferred to double strength 

 Ringer 

 4.03 P.M. weighed 0.175 gram 

 4.11 P.M. weighed 0.170 gram 

 4.19 P.M. weighed 0.167 gram 

 4.27 P.M. weighed 0.163 gram 

 4.35 P.M. weighed 0.160 gram 

 4.43 P.M. weighed 0.157 gram 

 4.51 P.M. weighed 0.154 gram 

 4.59 P.M. weighed 0.154 gram, still 



somewhat irritable 

 9.31 A.M. March 30, weighed 0.166 

 gram, entirely unirritable, 

 but shows little or no sign 

 of oncoming rigor 

 Temperature varied between 20° and 

 21° 



