75

relation of type in two countries direct relation to facilities of communication

Have races of Plants, ever been crossed really, if there is any difficulty in such marriages or offspring show tendency to go back — there is an end to species.—

76

Brown Appendix¹

A most remarkable observation of Mr Brown, about peculiarities of Flora, on East & West, ends of New Holland, diminishing towards centre (p. 586) — 20

Parallel 33°-35°, source of forms, reduce towards Northern Eastern end & die away, & partake of Indian character

¹ Robert Brown. Appendix No. III in A Voyage to Terra Australis.by Matthew Flinders, vol. 2, 1814, PP. 533-613; General Remarks, geographical and systematical, on the Botany of Terra Australis ; p. 586:— "nearly half the Australian species of plants, at present known, have been collected in a parallel included between 33° and 35° latitude ; and it appears from the preceding observations on the several natural orders, that a much greater proportion of the peculiarities of the Australian Flora exists in this, which I have therefore called the principal parallel…Within the tropic at least on the East coast, the departure from the Australian character is much more remarkable, and an assimilation nearer to that of India than of any other country takes place ". [deB67]

107

Ed. New. Philosoph J. No 3. p. 207¹ "It is not generally known that Ireland possesses varieties of the furze, broom, & yew very different from any found in great Britain, British varieties are also found in Ireland —

20

¹ Robert Jameson, editor of Edinburgh New Philosophical Journal, vol. 2, 1826, Scientific Intelligence — Botany, p. 207:— "Irish Furze, Broom, and Yew". [deB67]

108

There must be progressive development; for instance none — ?, of the vebtetrata vertebrates could exist without plants & insects had been created; but on other hand creation of small animals must have gone on since from parasitical nature of insects & worms.— In abstract we may say that vegetables & mass of insects could live without animals

123

Race permanent, because every trifle heredetary, without some cause of change,, yet such causes are most obscure, without doubt: — Vide cattle:

The grand fact is to establish whether in crossing very opposite races, whether you would expect equal fertility — ditto in Plants.

124

It will be well to refer to Chamisso¹ Vol III p. 155. about quantities of seeds in sea; also Holman² : at Keeling these are most important facts.— As soon as island large enough for land birds, seeds picked from the beach by the birds; most seeds germinating.

18

¹ Adelbert von Chamisso, in Otto von Kotzebue, A Voyage of Discovery into the South Sea and Beering's Straits… translated by H. E. Lloyd, London 1821. [deB67]

² James Holman. Voyage round the World, London 1834. [deB67]