[144]

Dahlia 18th

(For description see back)

F 139.

1/5 scale, all on same block

6 sets of lettering

Please observe a gap on no line in one place between 6˚40' a.m. & 8˚20/ a.m on 19th.

[144v]

81 692

Chap. E 10

serving to entice numerous insects and to compensate for the accidental destruction of many flowers by spring-frosts or otherwise, would be a very great advantage to the species; and when we behold our orchard-trees covered with a white sheet of bloom in the spring, we should not falsely accuse nature of wasteful expenditure, though comparatively little fruit is produced in the autumn.

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Anemophilous Plants.—The nature and relations of plants which are fertilised by the wind have been admirably discussed by Delpino and H. Müller*(1); and I have already made some remarks have already been made in this chapter on the structure in contrast with those of entomophilous species. There is good reason to believe that the first plants which appeared on this earth were cryptogamic; and judging from what now occurs, the male fertilising element must either have possessed the power of spontaneous movement through the water or over damp surfaces, or have been carried by currents of water to the female organs. That some of the most ancient plants, such