MEASUREMENTS 



297 



F;o. 209. 

 Inscribing slide of the ergograph. 



The two parts of Mosso's ergograph are mounted securely on 

 a table, and the pulley projects over the end of the table ; the 

 fixed portion, parallel to the side edge of the table, is inclined 

 to the right for the right hand. The finger is attached to the cord 

 S by means of a leather ring round the second phalange. The 

 position of the screw C is adjusted and a weight, P, say 3 kilo- 

 grammes, is suspended at the end of the cord T. The pen is put 

 in contact with a registering cylinder rotating slowly (fig. 210). 



Fo. 



Complete Mosso ergograph, 



