Functional (Edema in Frog's Muscle. 



547 



Weight of muscle. 



Excess of weight of stimulated 

 muscle. 



Gain of weight per cent, by 

 stimulated muscle. 



mgrm. 



mgrm. 





370 -0 



12 1 



3-5 



189 -5 



18-6 



9-7 



254 -0 



30 "5 



12 -0 



The specific gravities were determined in two cases : — 



Average weight of 

 muscle. 



Excess of stimulated 

 muscle. 



Specific gravity of 

 stimulated muscle. 



Specific gravity of 

 unstimulated muscle. 



mgrm. 



mgrm. 







370 -0 



12-1 



1-054 



1 -059 



189-5 



18 -6 



1 -076 



1 -072 



Series 5. — We have made some experiments, as yet incomplete, to deter- 

 mine the length of time which elapses before the oedema passes away. At 

 present we can say that it is evident after six hours from stimulation, but 

 the fluid appears to have become absorbed in 16 hours ; between these wide 

 limits we have no data at present : — 



Weight of muscle. 



Excess of weight of 

 stimulated side. 



Gain of weight per 

 cent. 



Interval after 

 stimulation. 



mgrm. 



mgrm. 





h. 



m. 



254 



30-5 



12 





30 



257 



25 



10 





45 



370 



12-1 



3-3 





60 



192 



37 



19 



1 



30 



235 



7-6 



3-2 



1 



40 



189 -5 



18 -6 



9-7 



2 







322 -6 



28 -4 



9-2 



2 







237 



3-2 



1 4 



2 



20 



438 



7'2 



1 -6 



3 



10 



456 -4 



5 8 



1 -3 



4 



30 



281 -6 



6-1 



2 -2 



5 







394 -6 



14 -4 



3-6 



5 



15 



227 -4 



27-6 



12 



6 







275 



-17 



-6 2 



16 



45 



135 -6 



- 1-8 



-1 -3 



17 







Discussion of Results. — It is clear that the phenomenon which we have 

 observed can only take place when the muscle is well supplied with fluid 

 from some external source. Fletcher* observed a phenomenon which is 



* ' Journ. Physiol.,' vol. 30, p. 414 (1904). The reader is referred to this paper for an 

 excellent account of the literature of the subject, including the early experiments of 

 Ranke. 



VOL. LXXXVIII. — B. 2 U 



