h began near the end of Lect. III. at p. 105.

SUMMARY of the course of lectures. (pp. 339-41.)--Recapitulation of the
original purpose, which is stated to have been, while assuming the potency
of the moral, to analyse the intellectual causes of doubt, which have been
generally left uninvestigated.

Refutation of objections which might be made; such as

(1) One directed against the utility of the inquiry. (p. 342.) (2) One
directed against its uncontroversial character.

A critical history shown to be useful in the present age, (1) in an
educational point of view for those who are to be clergymen, and to
encounter current forms of doubt by word or by writing (pp. 342-345); and
(2) in a controversial point of view, by resolving the intellectual
element in many cases of unbelief into incorrect metaphysical philosophy;
the value of which inquiry is real, even if such intellectual causes be
regarded only as the conditions, and not the causes, of unbelief. (p.
345.)

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Further objections anticipated and refuted in reference (3) to the candour
of the mode of inquiry, and the absence of vituperation which is stated
not to be due to indifference to Christian truth, but wholly to the
demands of a scientific mode of treatment (p. 346); (4) to the absence of
an eager advocacy of any particular metaphysical theory; which is due to
the circumstance that the purpose was to exhibit errors as logical
corollaries from certain theories, without assuming the necessary
existence of these corollaries in actual life (p. 347); (5) to the
insufficiency of the causes enumerated to produce doubt without taking
account of the moral causes; which objection is not only admitted, but
shown to be at once the peculiar property which belongs to the analysis of
intellectual phenomena, and also a witness to the instinctive conviction
that the ultimate cause of belief and unbelief is moral, not intellectual;
which had been constantly assumed. (p. 347.)

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THE LESSONS derived from the whole historical survey. (p. 348 seq.)

I. What has been the office of doubt in history? (p. 348.)

Opposite opinions on this subject stated. (p. 348.) Examination of the
ordinary Christian opinion on the one hand, which regards it as a mischief
(p. 348), and of Mr. Buckle's on the other, which regards it as a good.
(p. 349.)

1. The office is shown to be,