LUDWIG'S KVMOGRArillON. 

 Tia. 133. 



281 



A, Ludwig'o Eymograpliion. a', the manoniefer. Instead of one simple bent; 

 glass tube, il; consists of two tubfs fixed on a piece of wood and joined by a piece- 

 of metal 5, which n.ay be unscrewed for cleanirg the tubes, p is a tube of soft 

 lead, for connecting the inanomoter with the artery. One end of it is screwed 

 to the manometer and tlic other is attached to a stopcock d. d is a stopcock 



