that result has been arrived at. It is good for us all to know the
position of New York and Rio and Calcutta on the map, without its being
necessary for us to understand, far less to work out for ourselves, the
observations and calculations which fixed their latitude and longitude.
Knowledge of the map is a good thing in itself, though it is a very
different thing indeed from the technical knowledge which enables a man
to make a chart of an unknown region, or to explore and survey it.
Furthermore, it is a form of knowledge far more generally useful. A fair
acquaintance with the results embodied in the atlas, in the gazetteer,
in Baedeker, and in Bradshaw, is much oftener useful to us on our way
through the world than a special acquaintance with the methods of
map-making. It would be absurd to say that because a man is not going to
be a Stanley or a Nansen, therefore it is no good for him to learn
geography. It would be absurd to say that unless he learned geography in
accordance with its methods instead of its results, he could have but a
smattering, and that a little knowledge is a dangerous thing. A little
knowledge of the position of New York is indeed a dangerous thing, if a
man uses it to navigate a Cunard vessel across the Atlantic. But the
absence of the smattering is a much more dangerous and fatal thing if
the man wishes to do business with the Argentine and the Transvaal, or
to enter into practical relations of any sort with anybody outside his
own parish. The results of geography are useful and valuable in
themselves, quite apart from the methods employed in obtaining them.

It is just the same with all the other sciences. There is nothing occult
or mysterious about them. No just cause or impediment exists why we
should insist on being ignorant of the orbits of the planets because we
cannot ourselves make the calculations for determining them; no reason
why we should insist on being ignorant of the classification of plants
and animals because we don't feel able ourselves to embark on anatomical