Cuar. IX.] EFFECTS OF PREVIOUS IMMERSION. 175 
Name of the Salts and 
Acids in Solution. 
Period of ! 
Immersion o! 
the Leaves 
in Solutions 
lof one part to! 
437 of water. 
Effects produced on the Leaves by their subse- 
quent Immersion for stated periods in a 
Solution of one part of phosphate of 
ammonia to 8750 of water, or 1 gr. to 
20 oz. 
Rubidium chloride 
Potassium carbonate . 
Calcium acetate . . 
Calcium nitrate . 
Magnesium acetate 
Magnesium nitrate 
Magnesium chloride . 
Barium acetate 
Barium nitrate .  . 
Strontium acetate . 
Strontium nitrate. . 
Aluminium chloride . 
Aluminium nitrate 
Lead chloride . 
Manganese chloride . 
Lactic acid 
Tannic acid 
Tartaric acid . 
Citric acid a 
Formic acid 
22 hrs. 
20 m. 
24 hrs. 
24 hrs. 
22 hrs. 
22 hrs. 
22 hrs. 
22 hrs, 
22 hrs, 
22 hrs. 
22 hrs. 
24 hrs. 
24 hrs, 
23 hrs. 
22 hrs. 
48 hrs. 
24 hrs. 
24 hrs. 
24 hrs. 
22 hrs. 
After 30 m. strong inflection of the 
tentacles. 
Scarcely any inflection until 5 hrs. had 
elapsed. 
After 24 hrs. very slight inflection. 
Do. do. 
Some slight inflection, which became 
well pronounced in 24 hrs, 
After 4 hrs. 30 m. a fair amount of 
inflection, which never increased. 
After a few minutes great inflection ; 
after 4 hrs. all four leaves with almost 
every tentacle closely inflected. 
After 24 hrs. two leaves out of four 
slightly inflected. 
After 30 m. one leaf greatly, and two 
others moderately, inflected; they 
remained thus for 24 hrs. 
After 25 m. two leaves greatly in- 
flected; after 8 hrs. a third lea 
moderately, and the fourth very 
slightly, inflected. All four thus 
remained for 24 hrs. 
After 8 hrs. three leaves out of five 
moderately inflected; after 24 hrs. 
all five in this state; but not one 
closely inflected. 
Three leaves which had either been 
slightly or not at all affected by the 
chloride became after 7 hrs. 30 m. 
yather closely inflected. 
After 25 hrs. slight and doubtful effect. 
After 24 hrs. two leaves somewhat in- 
flected, the third very little; and 
thus remained. 
After 48 hrs. not the least inflection. 
After 24 hrs. a trace of inflection in a 
few tentacles, the glands of which 
had not been killed by the acid. 
After 24 hrs. no inflection. 
Do. do. 
After 50 m. tentacles decidedly inflected, 
and after 5 hrs. strongly inflected ; 
so remained for the next 24 hrs. 
Not observed until 24 hrs. had elapsed ; 
tentacles considerably inflected, and 
protoplasm aggregated. 
