THE MOVEMENTS OF PLANTS. 
205 
before the stigmas, and assume a position adapted to insects to 
transport their pollen. Subsequently the filaments bend away, 
and the styles now take up the same position that the filaments 
had previously held (Pl. Y. figs. 19-22). 
Space will not allow further descriptions ; but enough has 
now been said to show how extensive and varied are the 
movements effected by the different organs of plants, and the 
advantages accruing to them by possessing such powers of 
motion. 
EXPLANATION OF PLATE V. 
Figs. 1, 2, 8-16, after Darwin. 
Figs. 4-7, 1 9-22, ad nat. 
Figs. 17, 18, after Kerner. 
Figs. 1 and 2. Zea mags ; radicles excited to bend away from little squares 
of card attached to one side of their tips. In fig. 2, the card has 
been rubbed off. 
Fig. 3. A radish, of which the radicle had tied itself into a knot, probably 
in the same manner as in the case described and figured by 
Mr. Darwin, by the apex continually moving away from some 
obstruction, until it had passed through the loop, as seen in 
fig. 2. Reduced one-half. 
Fig. 4. Pendulous head of florets of Trifolium subterraneuin ; the fertile 
flowers reflexed, the abortive still erect, forming a vertical cone. 
Fig. 5. The same, with abortive florets, now developed and becoming 
reflexed. 
Fig. 6. A barren floret, enlarged. It consists of the rigid ‘ calyx-tube,’ 
supporting claw-like sepal lobes. 
Fig. 7. Multicellular hairs from the calyx, which exhibit aggregation under 
the process of absorption of nitrogenous matters. Figs. 4-7 
enlarged. 
Fig. 8. Leaf of Averrhoa bilimbi, asleep, with its leaflets pendulous ; much 
reduced. 
Fig. 9. Leaf of Lupinus pilosus seen vertically from above, by day. 
Pig. 10. Leaf of the same seen laterally, at night. Figs. 9 and 10 reduced. 
Fig. 11. Leaf of Melilotus officinalis, during daytime. 
Fig. 12. Leaf of the same, asleep. 
Fig. 13. Leaf of same, asleep, seen vertically from above. Figs. 11-13 
enlarged. 
Fig. 14. Leaf of Trifolium repens, during the day. 
Fig. 15. Leaf of same, asleep, at night. 
Fig. 16. Leaf of Coronilla rosea, asleep, with its leaflets thrown upwards. 
Fig. 17. Flower of Silene nutans, by night, the petals unrolled. 
Fig. 18. The same, by day, the petals being rolled up. 
