CARBONATE OF AMMONIA ON OHLOROPHYLL-BODIES. 277 
were made; but one case will suffice. A piece of a pitcher was 
left for 24 hours in a solution of 4 parts of the carbonate of 
ammonia to 1000 of water, and for 24 additional hours in a solu- 
tion of 7 to 1000. In the cells of the parenchyma, especially in 
those close to the vascular bundles, there were many spheres and 
aggregated masses of bright orange transparent matter. Spheres 
of the same and of various other tints were present in the epi- 
dermal cells, more especially in those on the inner surface of the 
pitcher; and some of these spheres were of exactly the same 
pale greenish colour as the swollen chlorophyll-grains which were 
still present in some places, being often collected together into 
rounded masses. In many of the epidermal cells which con- 
tained spheres no chlorophyll-grains could be seen, though they 
were abundantly present in the epidermis of fresh leaves; and 
it is this fact which chiefly leads me to believe that the chloro- 
phyll-grains sometimes become so completely fused together as 
to form spheres, being often blended with the aggregated and 
coloured cell-sap. When a solution of iodine was added to these 
sections, the pale-coloured spheres and irregularly shaped aggre- 
gated masses became bright orange, and they were sometimes 
sprinkled over with blue particles of starch. The iodine did not 
cause their immediate disintegration and disappearance, nor did 
alcohol or acetic acid. In this respect they differ from the 
recently aggregated masses in Drosera; though in this latter 
plant the older and more solid aggregated masses are not acted 
on by these reagents. Many of the cells contained green gra- 
nular matter, formed either by the chlorophyll-grains having 
been mechanically smashed or by their disintegration ; and acetic 
acid sometimes caused this granular matter to change instantly 
into the same orange tint as that of the aggregated masses. 
The orange spheres and variously shaped masses were seen in 
many sections of pitchers which had been exposed for different 
lengths of time to solutions of the carbonate of different 
strengths; and in many of them swollen grains of chlorophyll 
had become more or less confluent. The original nature of the 
latter could be recognized by the sinuous outlines and greenish 
tint. They were not seen to change their shapes spontaneously ; 
but this could not have been expected in sections. Portions of 
a pitcher left in distilled water for nearly three days did not 
exhibit a single orange sphere or aggregated mass; but there 
were some colourless oil-globules which were dissolved by alcohol ; 
A z 
LINN. JOURN.—BOTANY, VOL. XIX. 9 4 
