560 



EDWAKD B. MEIGS 



Experiment 43 

 February 16, 1911 

 Flat part of tendo Achillis of bull- 

 frog 27, weighed fresh 0.062 gram 

 11.08 A.M. immersed in Ringer without 



NaHCOs 

 11.38 A.M. weighed 0.069 gram 

 3.08 P.M. weighed 0.067 gram 

 10.38 A.M. February 17, weighed 0.068 



gram 

 4.08 P.M. weighed 0.070 gram 

 10.38 A.M. February 18, weighed 0.072 

 gram 

 Temperature varied between 19° and 

 21° 



Experiment 44 

 February 16, 1911 



Flat part of tendo Achillis of bull- 

 frog 27, weighed fresh 0.032 gram 

 11 .30 a.m. immersed in Ringer without 

 NaHCOs + 0.01 per cent 

 lactic acid 

 12.00 M. weighed 0.0325 gram 

 3.30 P.M. weighed 0.033 gram 

 11.00 A.M. February 17, weighed 0.045 



gram 

 4.30 P.M. weighed 0.053 gram 

 11.00 A.M. February 18, weighed 0.062 

 gram 

 Temperature varied between 19° and 

 21° 



Experiment 45 

 February 22, 1911 

 Sartorius of bull-frog 28, weighed 

 fresh 0.180 gram 

 3.08 p.m. immersed in 2.3 per cent 

 alanin solution (neutral 

 reaction) ; shortened some- 

 what and remained short- 

 ened 

 3.28 P.M. weighed 0.180 gram 

 3.48 P.M. weighed 0.180 gram 

 4.08 P.M. weighed 0.176 gram 

 4.35 P.M. no longer irritable, trans- 

 ferred to Ringer 

 4.53 P.M. quite perceptibly irritable 

 10.30 A.M. February 23, now quite irri- 

 table, though rigor is well 

 started. 

 Temperature varied between 19° and 

 20° 



Experiment 46 

 Februarys 22, 1911 

 Portion of stomach muscle of bull- 

 frog 28, weighed fresh 0.177 gram 

 3.18 P.M. immersed in 2.3 per cent 

 alanin solution (neutral 

 reaction) 

 3.38 P.M. weighed 0.179 gram 

 3.58 P.M. weighed 0.195 gram, fibers 



beginning to lengthen 

 4.18 P.M. weighed 0.208 gram, fibers 

 now considerably length- 

 ened and still quite irri- 

 table 

 10.45 A.M. February 23, weighed 0.268 

 gram, fibers now very 

 much lengthened, and still 

 somewhat irritable, alanin 

 solution still has neutral 

 reaction 

 Temperature varied between 19° and 

 20° 



