CHANGES IN NERVE CELLS. 



No. 2.] 



The results of the whole series may be seen at a glance from 

 the following table : — 



TABLE IX. 



Series to show Influence of Rest. 



Ri,ht brachial pUxus of each stimulated in the same .nanner for five hours, 



and allowed to rest. 



16.70 Left, normal. 

 15.09 Yi\^'^, stimulated. 



16.34 Left, normal. 

 14-73 Rig^*^' ^ti^nulated. 



17.08 Left, normal 

 16.03 Right, stimulated. 



17.01 Left, normal 



1 7 . 1 1 Right, stim ulated. 



14.20 Left. 

 14.54 Right. 



In this series stimulation was severe ; but it must be remem- 

 be ed that during the so-called ^ve hour period work .wa 

 applied for only fifteen seconds each minute. ?-« ^ours o 

 simulation represent, therefore, only one hour and a quarter 

 actTve working of the cells. In this short time the change .s 

 m :red as sh'own by a shrinkage of 4^8 per cent m the nude 

 of the stimulated side. The cells, as be ore, ^^r nk httle, and 

 the cell protoplasm exhibits considerable vacuolat.oa (For 

 effect of five hours' stimulation, cat .7. compare F'S; -^/ f. 

 ., and Fig. 3 with Fig. 4. For influence of -^'.^^'Y TWs a^ 

 c;mpare Fig. 5 with Fig. 4 and with F.g. 3, «• VH. Th^^j ^^ 

 before remarked, is not well shown m the plate_ In general 

 substance is lost from the cell interstmal ly - ;'^°«" ^^^^ 

 oles and lighter granulation, while the "^'f^^^" "^ ^^], _7„: 

 This would seem to indicate that the reticulum of the cell pro 

 top'asm is stiff and elastic enough to hold Us shape when the 



