Cmar. IX] ALKALOID POISONS. 163 
latter, however, on being subsequently moistened with saliva or given 
bits of meat, became incurved, though with extreme slowness; and 
this shows that they had been injured. Stronger solutions (but the 
strength was not ascertained) sometimes arrested all power of movement 
very quickly; thus bits of meat were placed on the glands of several 
exterior tentacles, and as soon as they began to move, minute drops of 
the strong solution were added. They continued for a short time to 
go on bending, and then suddenly stood still; other tentacles on the 
same leaves, with meat on their glands, but not wetted with the 
strychnine, continued to bend and soon reached the centre of the 
leaf. 
Citrate of Strychnine.—Half-minims of a solution of one part to 
437 of water were placed on the discs of six leaves; after 24 hrs. the 
outer tentacles showed only a trace of inflection. Bits of meat were 
then placed on three of these leaves, but in 24 hrs. only slight and 
irregular inflection occurred, proving that the leaves had been greatly 
injured. Two of the leaves to which meat had not been given had 
their discal glands dry and much injured. Minute drops of a strong 
solution of one part to 109 of water (4 grs. to 1 0z.) were added to the 
secretion round several glands, but did not produce nearly so plain an 
effect as the drops of a much weaker solution of the acetate. Particles 
of the dry citrate were placed on six glands; two of these moved some 
way towards the centre, and then stood still, being no doubt killed ; 
three others curved much farther inwards, and were then fixed; one 
alone reached the centre. Five leaves were immersed, each in thirty 
minims of a solution of one part to 487 of water; so that each received 
Jj; of a grain; after about 1 hr. some of the outer tentacles became 
inflected, and the glands were oddly mottled with black and white. 
These glands, in from 4 hrs. to 5 hrs., became whitish and opaque, and 
the protoplasm in the cells of the tentacles was well aggregated. By 
this time two of the leaves were greatly inflected, but the three others 
not much more inflected than they were before. Nevertheless two 
fresh leaves, after an immersion respectively for 2 hrs. and 4 hrs. in 
the solution, were not killed; for on being left for 1 hr. 30 m, in a 
solution of one part of carbonate of ammonia to 218 of water, their 
tentacles became more inflected, and there was much aggregation. 
The glands of two other leaves, after an immersion for 2 hrs. in a 
stronger solution, of one part of the citrate to 218 of water, became of 
an opaque, pale pink colour, which before long disappeared, leaving 
them white. One of these two leaves had its blade and tentacles 
greatly inflected; the other hardly at all; but the protoplasm in the 
cells of both was aggregated down to the bases of the tentacles, 
with the spherical masses in the cells close beneath the glands 
blackened. After 24 hrs. one of these leaves was colourless, and 
evidently dead. 
Sulphate of Quinine.—Some of this salt was added to water, which 
is said to dissolve 24,5 part of its weight. Five leaves were immersed, 
each in thirty minims of this solution, which tasted bitter. In less 
M 2 
