CHARLES ROBERT DARWIN. 475 
On the ag of Sea-water on the Germination of Seeds; Journ. Linn. Soc., vol. i, 
1857 gea a 
On pii of Bees in the Fertilization of Papilionaceous Flowers; Ann. Nat. 
Hist., 2 Pe Ug p. 459 
On the 
Ti E E N 3343 
f the species of Primula; Journ. Linn. 
Soc., vol. vi, ie (Bot.), p. 77. 
t SER of e, —_ and mee reciprocal Sexual Relations in the genus 
Linum; Journ. n. Soe vii, 1863 (Bot.), p. 
On the sair Baou. a the Three P of Lythrum; Journ. Linn. Soc., vol. 
Vili, 1864, p. 169. 
On the hatha and oe oe nature of Offspring of Dimorphic 
and Trimorphic Plants; Journ. Lin 0C., vol. x, a (Bot. ),P 
On the Specific Differe ae eins Primula v and P. nes and = the Hy- 
brid Nature of the common Oxslip; Journ. imn. $00, a. x, 1867 ‘hoes hp 
Notes on the abet of Orchids; Ann. Nat. Hist., Sept., 1 
Geological Works. The Structure and pear tet of kee “1812; ‘Pp 214, 
Geological Higeetde ri on Dare ae Islands, bie sgia 
Geological Observa ns merica, 1 
nnectio n of aes e oo Phenomena i in aa porn etc.; Trans. Geol. 
Soc., vol. v; read March, 1 
On the Distribution of a Erratic Boulders in South America; Trans. Geol. Soc., 
vol. vi; read April, 1841. 
n the Transportal of Erratic Boulders from a lower to a higher level; Journ. Geol. 
Soc., 1848, p. 315. 
Kolas on the Ancient Glaciers of Caernarvonshire; Phil. Mag., vol. xxi, 1842, p. 180. 
On the Geology of the Falkland Islands; Jou 1. Soc., 1846, pp. 267. 
Re kable Bar of Sandst off Pernambuco; Phil. Mag., Oct., 1841, p. 257, 
On the formation of Mould; Trans. 1 » Vol. V, ; za 
On the Parallel Roads of Glen Roy; Trans. Phil. Soc., 1839, p 
On the Power of Icebergs to make Grooves on a AE e t PEE Phil. Mag., 
Aug., 1855. 
account of Be Fine Dust which often falls on vessels in the Atlantic Ocean; 
Proc. Geol. Soc., 1 
Origin of the o Deposits of Patagonia; Journ. Geol. Soc., vol. ii, 1838, p. 
Part Geology; Admiralty Manual of Scientific Inquiry, 1849. Third ed., 1859. 
NOTICE BY ASA GRAY. 
Two British naturalists, Robert Brown and Charles Darwin, 
have, more than any others, impressed their influence upon science 
in this nineteenth century. Unlike as these men and their works 
were and are we may most readily subserve the present purpose in 
what we are called upon to say of the latter by briefly comparing 
and contrasting the two. 
obert Brown died sixteen years ago, full of years and scientific 
honors, and he seems to have finished several years earlier all 
the scientific work that he had undertaken. To the other, Charles 
Darwin, a fair number of productive years may yet remain, and 
are earnestly hoped for. Both enjoyed the great advantage of 
ing all their lives long free from any exacting professional du- 
