Cuar VII | EFFECTS OF VARIOUS SALTS. 185 
ferred to the solution (1 gr. to 20 oz.) of phosphate of ammonia, 
and after 24 hrs. two of them were somewhat, the third very 
little, inflected; and they thus remained for another 24 hrs. 
Tin, Chloride of —Four leaves were immersed in 120 minims 
of a solution of about one part (all not being dissolved) to 487 of 
water. After 4 hrs. no effect; after 6 hrs. 30 m. all four leaves 
had their submarginal tentacles inflected; after 22 hrs. every 
single tentacle and the blades were closely inflected. The sur- 
rounding fluid was now coloured pink. The leaves were washed 
and transferred to water, but next morning were evidently dead. 
This chloride is a deadly poison, but acts slowly. 
Antimony, Turtrute of—Three leaves were immersed in ninety 
minims of a solution of one part to 487 of water. After 8 hrs. 
30 m. there was slight inflection; after 24 hrs. two of the leaves 
were closely, and the third moderately, inflected; glands not 
much darkened. The leaves were washed and placed in water, 
but they remained in the same state for 48 additional hours. 
This salt is probably poisonous, but acts slowly. 
Arsenious Acid.—A solution of one part to 437 of water ; three 
leaves were immersed in ninety minims; in 25 m. considerable 
inflection ; in 1 h. great inflection; glands not discoloured. After 
6 hrs. the leaves were transferred to water; next morning they 
looked fresh, but after four days were pale-coloured, had not 
re-expanded, and were evidently dead. 
Iron, Chloride of—Three leaves were immersed in ninety 
minims of a solution of one part to 487 of water; in 8 hrs. no 
inflection; but after 24 hrs. considerable inflection; glands 
blackened; fluid coloured yellow, with floating flocculent 
particles of oxide of iron. The Jeaves were then placed in 
water; after 48 hrs. they had re-expanded a very little, but I 
think were killed ; glands excessively black. 
Chromic Acid.—One part to 437 of water; three leaves were 
immersed in ninety minims; in 30 m. some, and in 1 hr. con- 
siderable, inflection; after 2 hrs. all the tentacles closely in- 
flected, with the glands discoloured. Placed in water, next 
day leaves quite discoloured and evidently killed. 
Manganese, Chloride of—Three leaves immersed in ninety 
minims of a solution of one part to 487 of water; after 22 hrs. 
no more inflection than often occurs in water; glands not 
blackened. The leaves were then placed in the usual solution 
of phosphate of ammonia, but no inflection was caused even 
after 48 hrs. 
Copper, Chloride of.—Three leaves immcrsed in ninety minims 
