er of facts to be accurately certain of
any general principle, we must, however tedious the task, enumerate
all the facts that are known, and warn the pupil of the imperfect
state of the science. All the facts must, in this case, be stored up
with scrupulous accuracy; we cannot determine which are unimportant,
and which may prove essentially useful: this can be decided only by
future experiments. By thus stating honestly to our pupils the extent
of our ignorance, as well as the extent of our knowledge; by thus
directing attention to the imperfections of science, rather than to
the study of theories, we shall avoid the just reproaches which have
been thrown upon the dogmatic vanity of learned preceptors.

"For as knowledges are now," says Bacon, "there is a kind of contract
of errour between the deliverer and receiver; for he that delivereth
knowledge, desireth to deliver it in such a form as may be best
believed, and not as may be best examined; and he that receiveth
knowledge, desireth rather present satisfaction than expectant
inquiry; and so rather not to doubt, than not to err; glory making the
author not to lay open his weakness, and sloth making the disciple not
to know his strength."[32]

FOOTNOTES:

[13] V. Preface to Berthollet's Chemical Nomenclature.

[14] V. Condillac's "Art de Penser."

[15] Major Cartwright. See his Journal, &c.

[16] V. Chapter on Mechanics.

[17] V. Adela and Theodore.

[18] Chapter on Tasks.

[19] Zoonomia, vol. i. page 435.

[20] Cicero.

[21] Lucian.

[22] "And lends his little soul at every stroke." _Virg._

[23] V. Chapter II. on Tasks.

[24] Apercues.

[25] Deinology.

[26] V. Condillac Art de Penser.

[27] Mr. Owen.

[28] Mr. Erskine--The Star.

[29] V. Life of John Elwes, Esq. by T. Topham.

[30] V. Chapter on Toys.

[31] Zoonomia, vol. i. p. 21, 24.

[32] Bacon, vol. i. page 84.

CHAPTER IV.

SERVANTS.

"Now, master,"[33] said a fond nurse to her favourite boy, after
having given him sugared bread and butter for supper, "now, master,
kiss me; wipe your mouth, dear, and go up to the drawing room to
mamma; and when mistress asks you what you have had for supper, you'll
say, bread and butter, for you _have had_ bread and butter, you know,
master." "And sugar," said the boy; "I must say bread and butter and
sugar, you know."

How few children would have had the courage to have added, "and
sugar!" How dangerous it is to expose them to su