yself taught most of its contents, _viva voce_, to _many_ children, and
have found them take a real intelligent interest in the subject. For
those, who succeed in mastering Part I, and who begin, like Oliver,
"asking for more," I hope to provide, in Part II, some _tolerably_ hard
nuts to crack----nuts that will require all the nut-crackers they happen
to possess!
pg-xiii
Mental recreation is a thing that we all of us need for our mental
health; and you may get much healthy enjoyment, no doubt, from Games,
such as Back-gammon, Chess, and the new Game "Halma". But, after all,
when you have made yourself a first-rate player at any one of these
Games, you have nothing real to _show_ for it, as a _result!_ You
enjoyed the Game, and the victory, no doubt, _at the time_: but you have
no _result_ that you can treasure up and get real _good_ out of. And,
all the while, you have been leaving unexplored a perfect _mine_ of
wealth. Once master the machinery of Symbolic Logic, and you have a
mental occupation always at hand, of absorbing interest, and one that
will be of real _use_ to you in _any_ subject you may take up. It will
give you clearness of thought----the ability to _see your way_ through a
puzzle----the habit of arranging your ideas in an orderly and
get-at-able form----and, more valuable than all, the power to detect
_fallacies_, and to tear to pieces the flimsy illogical arguments, which
you will so continually encounter in books, in newspapers, in speeches,
and even in sermons, and which so easily delude those who have never
taken the trouble to master this fascinating Art. _Try it._ That is all
I ask of you!

L. C.

29, BEDFORD STREET, STRAND.
_February 21, 1896._

pg-xiv
pg-xv

CONTENTS.

=BOOK I.=

=THINGS AND THEIR ATTRIBUTES.=

CHAPTER I.

_INTRODUCTORY._

PAGE
'=Things=' 1

'=Attributes=' "

'=Adjuncts=' "

CHAPTER II.

_CLASSIFICATION._

'=Classification=' 1 1/2