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Jan – 46- Hooker – Fitchia nutans, a very wholly distinct genus (one of the most distinct) Compositæ from Elizabeth isld comes nearest to Juan Fernandez – As Pitcairn & Gambier isld are near, it is not so utterly so disagreeable a case as appeared at first. Sinapidendron (a cruciferous genus common to Madeira, "Canary & C. Verds,

(a) different species certainly in two coasts believes in all three – 2 species in C. Verds St. Jago – Difficult yet Canary Isd may have received a colonist from C. Verds.  In going far south in America & Australia as the species in common increase in

(But what reason to think more identity in climate &c then further north.)

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numbers, so do representative species.

Generally same proportion in islands, adjoining a large land, of proportional numbers of families, thus Canary Isd has large proport of Leguminosæ &c – Galapagos only partial exception – Argues if transported by sea, this proportion wd not have held – very good argument, wd not apply to migration on land – A struggle on isld wd tend to equalize numbers, but wd require enormous extinction to produce same results.

[in margin:] (Dr. Hookers suggestion)

 

(a) a remarkable  Euphorbiaceæ group has species at C. Verd & Canary Is & S. Africa, doubtful on other parts of Africa Canary & C. Verd has about 1/3 of species in common? – Welt has published on C. Verd.

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