572 Mr. V. H. Veley and Dr. A. D. Waller. [June 17, 



weight of the salt in the physiological saline solution, the net weights of the 

 residues (grammes per 100 c.c.) were found to be as under : — 



Tea = 1-98 



Coffee =1-8 



„ free from caffeine = 1'48 



The following results were obtained, as shown in the records (figs. 3 and 4): — 



minutes. i i i i i i i i i i I I I I i I I I i i I I I I I 



Fig. 3.— Saline Tea. Upper line 2-5 per cent. Lower line 1 per cent., then 5 per cent. 

 (At the points marked by arrows, simple saline was substituted for the saline tea.) 



Fio. 4.— Saline Coffee. Upper line 2-5 per cent. Lower line 1 per cent., then 5 per cent. 

 (At the points marked by arrows, simple saline was substituted for the saline coffee.) 



Saline Tea Extract. 



A l-per-c(!nt. extract produced no effect; on substituting a 5-per-cent. 

 extract, there was an immediate contracture followed l)y an equally immediate 

 recovery on roi)laceiiient of saline solution. After an interval of 19 minutes 

 a 2-5-i)er-coiit. extract was 8ul).stilutod, wliicli caused a slight contracture, 



