558 



EDWARD B. MEIGS 



Experiment 34 

 February 13, 1911 

 Strip of stomach muscle from bull- 

 frog 24, weighed fresh 0.121 gram 

 11.49 A.M. immersed in 0.7 per cent 

 NaCl solution 

 1.49 P.M. weighed 0.145 gram, fibers 



considerably lengthened 

 5.38 P.M. weighed 0.152 gram, fibers 

 shorter than at last weigh- 

 ing 

 10.49 A.M. February 14, weighed 0.123 

 gram, fibers much short- 

 ened 

 11.43 A.M. still slightly irritable, trans- 

 ferred to Ringer 

 2.30 P.M. only slightly more irritable 



than 11.43 a.m. 

 9.55 a.m. February 15, weighed 0.158 

 gram, fibers considerably 

 longer than at last weigh- 

 ing and now fairly irri- 

 table 

 Temperature varied between 19° and 

 22° 



Experiment 35 

 February 13, 1911 

 Strip of stomach muscle from bull- 

 frog 24, weighed fresh 0.145 gram 

 2.12 p.m. immersed in 0.7 per cent 



NaCl solution 

 5.49 P.M. weighed 0.174 gram, fibers 

 not much changed in 

 length 

 11.12 A.M. February 14, weighed 0.150 

 gram, fibers now much 

 shortened 

 2.33 P.M. gave no response to tetaniz- 

 ing current applied for one 

 second; transferred to 

 Ringer 

 10.25 A.M. February 15, weighed 0.157 

 gram, fibers only slightly 

 longer than at last weigh- 

 ing; gave decided though 

 small response to tetaniz- 

 ing current applied for one 

 second 

 Temperature varied between 19° and 

 22° 



Experiment 36 

 February 13, 1911 

 Strip of stomach muscle from bull- 

 frog 24, weighed fresh 0.1325 gram 

 2.20 P.M. immersed in Ringer 

 5.52 p.m. weighed 0.150 gram, fibers 

 not much changed in 

 length 

 11.20 a.m. February 14, weighed 0.165 

 gram, fibers now consid- 

 erably lengthened and 

 highly irritable 

 10.35 A.M. February 15, weighed 0.140 

 gram, fibers much shorter 

 than at last weighing, and 

 still somewhat irritable 

 The temperature varied between 19° 

 and 22° 



Experiment 37 

 February 13, 1911 

 Strip of stomach muscle from bull- 

 frog 24, weighed fresh 0.145 gram 

 2.09 P.M. immersed in Ringer without 



NaHCOs 

 5.46 P.M. weighed 0.1705 gram, fibers 

 not much changed in 

 length 

 11.09 A.M. February 14, weighed 0.180 

 gram, fibers now consid- 

 erably lengthened and 

 highly irritable 

 Temperature varied between 20° and 

 22" 



