24 



GENERAL PHYSIOLOGY 



By the perfection of this technique du Bois-Reymond made the 

 galvanic current of all stimuli the most convenient to employ and 



H 



FIG. 1. /. Lud wig's kymograph. One limb of the manometer is connected with an artery at A ; 

 the blood-pressure is transmitted to the column of mercury (represented in black), thence to 

 the float upon the mercury in the other limb, and puts this float with its writing-lever in 

 motion. The writing-lever inscribes its movements upon the drum, C, which is kept in 

 constant rotation by a clock-work, B. (From BrUcke). 11. Pulse-curve from a rabbit. The 

 small waves represent the variations in blood-pressure that constitute the pulse ; the large 

 waves, the variations that the blood-pressure undergoes as the result of respiration. 



the most capable of fine gradation and easy localisation for nerves 

 and muscles; for these reasons it now holds the first place 

 stimulation-experiments. 



in 



