46 THE PHYSIOLOGY OF MUSCLE AND NERVE. 



obtaining the product of the load into the lift for each contrac- 



Fig. 22. Mosso's ergograph: c is the carriage moving to and fro on runners by means 

 of the cord d, which passes Trom 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 the record of its movements on the kymographion ; w, the 

 weight to be lifted. 



tion and adding these products together. By this means the- 

 capacity for work of the muscle used can be studied objectively 



Fig. 23. Normal fatigue curve of the flexors of the middle finger of right hand. 

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



Weight?, 



under varying conditions, and many suggestive results have beeni 



