"[S]ince the publication of the Watt Correspondence, in 1846, the only lengthened notices... in reference to Cavendish, have been Sir David Brewster's Article in the ' for 1847, and Lord Jeffrey's Paper in the ' for 1848. Both of these writers pronounce against Cavendish, and refer to the Watt Correspondence as decisive of the merits of Watt; but... from the following pages... the admirers of Cavendish have every reason to congratulate themselves on the publication of the "Correspondence;"... for... it furnishes the most decisive evidence in favour of Cavendish, and as such I have constantly quoted from it."