110 



EXPERIMENTAL PHYSIOL* H J V 



tracted. As in the previous curve the second is rather more rapid 

 than the first contraction. The apex times for the two are f$ ths and 

 5-^ths sec. 



Curve IV. The second stimulation in this instance follows the first 



Fig. 92. — Tetanisation of a Feog's Venteicle in Standstill by the Stannius 

 Ligatuee. In 1 the Secondaey Coil AT 10 CMS. ; IN II AT 12 CMS. ; IN III 

 AT 13 CMS. FEOM THE PEIMAEY. MAGNIFICATION, 10. THE DUEATION OF 



Tetanisation is Indicated by the Shoet Veetical Mabks undee Each Teacing. 



after an interval of ffths sec, i.e. at the end of the period of contrac- 

 tion. We note the most striking result that no second contraction is 

 produced. It has fallen on the muscle fibre during a time when it is 



