From 'The Essay and Modern English Prose' by A.A. Tilley
Published in 'The Cambridge History Of English Literature' (1934 Edition) Volume 8 'The Age Of Dryden'
See quotation from Saviliana ap. Foxcroft, H. C., The Life and Letters of Sir Georqe Savile, Bart., first Marquis of Halifax (1898), vol. II, p. 277.