[313 and 314]

Oxalis rosea 18th

(Fig 14 13) C (B) Hypocotyl not tied

A distnct seedlings with hypocotyl not tied.

Oxalis rosea June 18th

O. rosea— [2 words illeg] of cotyledon & of hypocotyl traced on vertical glass from 8° 12 a.m June 18 to 7° 30' am Ju 19th; Apex of Tracing bet Cots stood at the height of ab 3 1/4 inch fr the vertical glass

Reduction

(Reduced Scale of engraving 1/2 of some Lettering)

Some of the lines will have to be curved & this diagram will be difficult to do, when reduced)

on same block with last

Apex of Cot only 3 3/4 fr the vertical glass, so measure not so [illeg] more so [find] as in Fig 13

[314v]

35 646

Chap. E 10

(All the last of Chapt. in large type)

=what opposed ends have to be gained; ─ the first and more important one, being the production of seeds by any means, and the second, to this, cross-fertilisation.

The advantages derived from cross-fertilisation through a flood of light on most of the chief characters of flowers. We can thus understand their large size and bright colours, and in some cases the bright colours of the adjoining parts such as the bracteæ &c. By this means they are rendered conspicuous to insects, on the same principle that almost all the points fruits which are devoured by birds present a strong contrast in colour with the green foliage, in order that they may be seen & be freely disseminated. With some flowers conspicuousness is gained at the expense even of the reproductive organs, as with the ray-florets of many Compositæ, the exterior flowers of Hydrangea and the terminal flowers of the Feather-hyacinth or Muscari. There is also reason to believe, and this was the opinion of Sprengel, that flowers differ in colour in accordance with the kinds

[Cross and self fertilisation, pp. 371-2: "But we should always keep in mind that two somewhat opposed ends have to be gained; the first and more important one being the production  of seeds by any means, and the second, cross-fertilisation.
The advantages derived from cross-fertilisation throw a flood of light on most of the chief characters of flowers. We can thus understand their large size and bright colours, and in some cases the bright tints of the adjoining parts, such as the peduncles, bracteae, etc. By this means they are rendered conspicuous to insects, on the same principle that almost every fruit which is devoured by birds presents a strong contrast in colour with the green foliage, in order that it may be seen, and its seeds freely disseminated. With some flowers conspicuousness is gained at the expense even of the reproductive organs, as with the ray-florets of many Compositae, the exterior flowers of Hydrangea, and the terminal flowers of the Feather-hyacinth or Muscari. There is also reason to believe, and this was the opinion of Sprengel, that flowers differ in colour in accordance with the kinds of insects which frequent them."]