Harriet Martineau to Faraday   13 April 1850

Ambleside | April 13th

My dear Sir

I am greatly obliged to you, & to your correspondent¹ (who is, however, a stranger to me) for correcting the mistake in my history regarding your countenance of the Acarus Crossi². I am anxious to be informed of every error of statement in my history, as there will be a new edition next year³, & it is of some importance that I should be set right in time. It never occurred to me to doubt the authority of the Annual Register in a matter of such straight-forward contemporary statement & it is really difficult to see how one can make sure of one’s material. However, I will take care that this mistake is rectified, & will explain the case whenever I have opportunity.

Believe me, dear Sir, with | the highest respect, your obliged | Harriet Martineau

I return Mr Cowper’s note⁴.