Both Uses

deception
in
Dr. Heidegger's Experiment
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"That is certainly a very pretty deception," said the doctor's friends; carelessly, however, for they had witnessed greater miracles at a conjurer's show; "pray how was it effected?"†
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deception = the act of lying to or misleading someone; or something that misleads
Yet, by a strange deception, owing to the duskiness of the chamber, and the antique dresses which they still wore, the tall mirror is said to have reflected the figures of the three old, gray, withered grandsires, ridiculously contending for the skinny ugliness of a shrivelled grandam.†

Definitions:

(1) (deception)
the act of lying to or misleading someone; or something that misleads
(2) (meaning too rare to warrant focus)