t On the infects of Opium 



time they continue to contract iS'e mviscles and 

 judge of the vivacity of the motions." 



" At the end of the first ten mhuitesi stimu- 

 lated the medicatecl nerves, i. e. those, to which 

 the solution' of opiurn was apphed, and those 

 Which were not rnedicated, and found that the 

 two extremities, |;be right as \yell a3 left,, con- 

 tracted with the sa.me -force and vivacity." 



" At the ehd of tidenty minutes , I tried the 

 stimulation and could perceive n6 sensible dif- 

 ference betwixt the motions of the ^t wo feet, 

 which were almost as lively as tliose in the first 

 experiment." 



" At the end of thirty ;»?7^w^<?>, the motions 

 of the two feet were feeder, but alike in both." 



^' At the end o^ forty miimies, the feet scarce- 

 ly contracted, but their distinct muscles were 

 clearly seen to contract, when the crural nerves 

 were stimulated, and the motions of these 

 muscles were equally lively in each foot." 



^' At the end oi fifty minutes^ the motions 

 were very small " from compression of the 

 nerves," but alike in both sides." 



*^ At the end of eighty minutes^ there was 

 no longer any motion to be observed jn several 

 of the frogs, in whatever "way"!" sfimulafed 

 either the crural nerves that were medicated, 

 or those which were not so.*' 



