ancy, and of every widely-
extended view which may give a notion of the general lie of the
country. Append, if you can, a note or two, saying whether a plain
is rich or barren; whether the rock is sandstone, limestone,
granitic, metamorphic, or volcanic lava; and if there be more rocks
than one, which of them lies on the other; and send them to be
exhibited at a meeting of the Geological Society. I doubt not that
the learned gentlemen there will find in your photographs a valuable
hint or two, for which they will be much obliged. I learnt, for
instance, what seemed to me most valuable geological lessons from
mere glances at drawings--I believe from photographs--of the
Abyssinian ranges about Magdala.

Or again, let a man, if he knows nothing of botany, not trouble
himself with collecting and drying specimens; let him simply
photograph every strange and new tree or plant he sees, to give a
general notion of its species, its look; let him append, where he
can, a photograph of its leafage, flower, fruit; and send them to
Dr. Hooker, or any distinguished botanist: and he will find that,
though he may know nothing of botany, he will have pretty certainly
increased the knowledge of those who do know.

The sportsman, again--I mean the sportsman of that type which seems
peculiar to these islands, who loves toil and danger for their own
sakes; he surely is a naturalist, ipso facto, though he knows it
not. He has those very habits of keen observation on which all
sound knowledge of nature is based; and he, if he will--as he may do
without interfering with his sport--can study the habits of the
animals among whom he spends wholesome and exciting days. You have
only to look over such good old books as Williams's "Wild Sports of
the East," Campbell's "Old Forest Ranger," Lloyd's "Scandinavian
Adventures," and last, but not least, Waterton's "Wanderings," to
see what valuable additions to true zoology--the knowledge of live
creatures, not merely dead ones--British sportsmen have made, and
still can make. And as for the employment of time, which often
hangs so heavily on a soldier's hands, really I am ready to say, if
you are neither men of science, nor draughtsmen, nor sportsmen, why,
go and collect beetles. It is not very dignified, I know, nor
exciting: but it will be something to do. It cannot harm you, if
you take, as beetle-hunters do, an indiarubber sheet to lie on; and
it will certainly benefit science. Moreover,