"The liberation from undergraduate study left me at liberty generally to pursue my own course (except so far as it was influenced by the preparation for fellowship examination), and also left me at liberty to earn more money, in the way usual with the graduates, by taking undergraduate pupils. Mr Peacock recommended me to take only four, which occupied me four hours every day, and for each of them I received 20 guineas each term. My first pupils, for the Lent and Easter terms, were Williamson (afterwards Head Master of Westminster School), James Parker (afterwards Q.C. and Vice-Chancellor), Bissett, and Clinton of Caius. To all these I had been engaged before taking my B.A. degree. "I kept up classical subjects. I have a set of notes on the [Greek: Ploutos] and [Greek: Nephelai] of Aristophanes, finished on Mar. 15th, 1823, and I began my daily writing of Latin as usual on Feb. 8th. In mathematics I worked very hard at Lunar and Planetary Theories. I have two MS. books of Lunar Theory to the 5th order of small quantities, which however answered no purpose except that of making me perfectly familiar with that subject. I worked well, upon my quires, the figure of Saturn supposed homogeneous as affected by the attraction of his ring, and the figure of the Earth as heterogeneous, and the Calculus of Variations. I think it was now that I wrote a MS. on constrained motion. "On Mar. 17th, 1823, I was elected Fellow of the Cambridge Philosophical Society. On May 9th a cast of my head was taken for Dr Elliotson, an active phrenologist, by Deville, a tradesman in the Strand.