“ This was an important reform, not so much on account of the mere change of notation (for mathematicians follow J. L. Lagrange in using both these notations) , but because it signified the opening to the mathematicians of Cambridge of the vast storehouse of continental discoveries. The analytical society thus formed in 1813 published various memoirs, and translated S. F. Lacroix's Differential Calculus in 1816. Peacock powerfully aided the movement by publishing in 1820 A Collection of Examples of the Application of the Diferential and Integral Calculus. ”

“ Modern mathematicians may find on reading this brilliant summary a good many dicta which they will call in question, but, whatever its defects may be, Peacock’s report remains a work of permanent value. In 1855 he published a memoir of Thomas Young, and about the same time there appeared Young’s collected works in three volumes, for the first two of which Peacock was responsible. ”

“ He was second Wrangler in 1812 (Sir J. F. W. Herschel being senior) , was elected fellow of his college in 1814, became assistant tutor in 1815 and full tutor in 1823. While still an undergraduate he formed a league with John Herschel and Charles Babbage, to conduct the famous struggle of “d-ism versus dot-age, ” which ended in the introduction into Cambridge of the continental notation in the infinitesimal calculus to the exclusion of the fluxional notation of Sir Isaac Newton. ”