466 BOTANICAL GAZETTE [JUNE 
2400. OHMS 
\ 
2000 ||  * 
1600. 
— . fone ESE 
1 Bite, —_ 
1200, 
800 | 
T y : 
2.6 10 20 HOURS 
Fic. 1.—Curves of electrical resistance of Laminaria saccharina in Laz(NO;)6 
o.126 M (line with crosses), in CaCl, 0.278 M (line with squares), and in sea water 
(dotted line). 
