THE PHENOMENON OF CONTRACTION. 



49 



retical and practical disadvantages, for a discussion of which 

 reference must be made to the authors quoted. 



Fig. 23. Mosso's ergograph: c is the carriage moving to and fro on runners by means 

 of the cord d, which passes from the carriage to a holder attached to the last two phalanges 

 of the middle finger (the adjoining fingers are held in place by clamps) ; p, the writing point 

 of the carriage, c, which makes tne record of its movements on the kymographion ; w, th 

 weight to be lifted. 



Fig. 24. Normal fatigue curve of the flexors of the middle finger of right hand. Weignt, 

 3 kilograms, contractions at intervals of two seconds. (Maggivra.) 



The weight ergograph has, so far at least, given us the most sug- 

 gestive results. Among these the following may be mentioned: 

 4 



