"mining all within" 227 



in the notes for the English translation published in 1723 

 by his brother John: the discussion of Kepler's laws*^ and 

 Morgan's dissertation on the rainbow are enlarged,*^ there is 

 mention of Newton's view of the origins of novae (taken from 

 the 1713 edition of the Principia) /^ and a handful more quo- 

 tations are culled from the Queries in the Opticks,^'^ but other- 

 wise almost all the changes are echoes of changes in the second 

 English edition of the Opticks (dated 1717, but published too 

 late for use in Clarke's 1718 notes) . 



The English translation with notes was republished twice, 

 in 1728/9 and 1735, and the Latin translation with notes 

 appeared in Leiden as late as 1739, over forty years after the 

 first set of notes and more than half-a-century after the pub- 

 lication of the Principia. Benjamin Hoadley and Whiston both 

 testify to the popularity of the Clarke-Rohault text in Cam- 

 bridge even after the editor's death in 1729, Hoadley remarking 

 with mixed feelings, " To this day his translation of Rohault 

 is, generally speaking, the standing text for lectures; and his 

 notes, the first direction to those who are willing to receive 

 the reality and truth of things in the place of invention and 

 romance," " Playfair may well be right in ascribing this popu- 

 larity to the dual system of college and university teaching in 

 Cambridge "; whatever the views of a college tutor over the 

 merits of Descartes and Newton, his students could use Clarke's 

 book. The work of Newton's supporters would have been 

 difficult indeed, if Clarke had not returned twice to make a 

 thorough revision of the hesitant and deferential annotatiun- 

 culae of his early graduate days, 



Michael A, Hoskin 



Whipple Science Museum 

 Free School Lane, 

 Cambridge, England. 



'' n, p. 75. 



*'n, pp. 233-235. 



'II, p. 71. Principia (1713 edition), p. 481. 

 ^°II, pp. 137-8; II, p. 193. 



°^ Hoadley in Samuel Clarke, Works, I, p. ii; Whiston, op. cit., p. 6. The text was 

 also used at Yale until 1743, cf. Sarton, op. cit., p. 145. 

 ■ Cf. Cajori, op. cit., pp. 631-2. 



62 



