In 1799 the moderators announced[55] that for the future they would require every candidate to show a competent knowledge of the first book of Euclid's _Elements_, arithmetic, vulgar and decimal fractions, simple and quadratic equations, and selected books by Locke and Paley. Paley's works seem to be held in esteem by modern divines, and his _Evidences_, though not his _Philosophy_, still remains (1917) one of the subjects of the Previous Examination, but his contemporaries thought less highly of his writings, or at any rate of his philosophy. Thus Best is quoted by Wordsworth[56] as saying of Paley's _Philosophy_, "The tutors of Cambridge no doubt neutralize by their judicious remarks, when they read it to their pupils, all that is pernicious in its principles": so also Richard Watson, bishop of Llandaff, in his anecdotal autobiography[57], says, in describing the senate-house examination in which Paley was senior wrangler, that Paley was afterwards known to the world by many excellent productions, "though there are some ... principles in his philosophy which I by no means approve." In 1800 the moderators extended to all men in the first four preliminary classes the privilege of being allowed to attempt the problem papers: hitherto this privilege had been confined to candidates placed in the first two classes. Until 1828 the problem papers were set in the evenings, and in the rooms of the moderator, but many of the so-called problems were really pieces of bookwork or easy riders. No problems were ever set to the men in the seventh and eighth preliminary classes, which contained the poll-men. The _University Calendars_ date from 1796, and from 1802 to 1882 inclusive contain the printed tripos papers of the previous January. The papers from 1801 to 1820 and from 1838 to 1849 inclusive were also published in separate volumes, which are to be found in most public libraries. None of the bookwork papers of this time are now extant, but it is believed that they contained few, if any, riders. In looking at these papers to form an opinion of the knowledge current at the time it is necessary to bear in mind that the text-books then in circulation were far from satisfactory. The _Calendar_ of 1802 contains a diffuse account of the examination. It commences as follows: