IN VEGETABLE BIOLOGY. 887 
of protoplasm applied upon the opposite wall; one month and four 
days in darkness. 
Fig. 10. Shows the effect of nine weeks’ darkness upon the chlorophyll bodies, 
which in a and b are still attached by colourless threads to the 
cell-wall: c and d, condensed bodies betraying a tendency to frag- 
ment; e-i represent details in the fragmentation process (A, acetic 
methyl-green, i, chloriodide-of-zine preparation); g, an undivided 
chlorophyll body in negative apostrophe. In % and $, » marks the 
disclosed nucleus. 
Prats XIV. 
Draparnaldia glomerata. 
Fig. 11. a and b, normal chlorophyll bodies from large axial cells; o and 
d, the same after forty-eight hours in darkness; e, g, and k show 
stages of fragmentation after three days in the dark ; f, a collapsed 
chloroplast (three days); and i, a broken ring which has lost its 
position with respect to the growth-axis after four days' confinement. 
x 450. 
Chatophora sp. 
Fig. 12. a and b, normal chlorophyll; c-e, stages in its condensation (c, d, after 
three, e after six days in darkness). x 450. 
Chantransia pygmaa. 
Fig. 13. a, a healthy cell with uniformly diffused chromatophore ; 5-d, conden- 
sation of this latter after one month and two days' withdrawal 
from light. x 450. 
Mesocarpus parvulus, var. angustus. 
Fig. 14. A condensed and fragmented chlorophyll plate ( 
eight days’ darkness) : 
n, the disclosed nucleus. x 450. . 
Mesocarpus scalaris. 
Fig. 15. Shows one effect of strong sunlight for half an hour (August) upon 
the chlorophyll which has collected into a couple of lenticular masses 
united by colourless plasma. X 400. 
Draparnaldia glomerata. 
Fig. 16. Chlorophyll bodies after four hours’ bright sunlight: a, a condensed 
ring; d,a ring near the point of disruption; c and d, fragmented 
rings of large axial cells ; in c, s the disclosed nucleus. X 450. 
Figs. 17, 18. Viola odorata. 
Fig. 17. A palisade-cell, seen from above. The effect of three days’ darkness 
