86 LETTERS ON SCIENTIFIC SUBJECTS. 



SIR CHARLES CAVENDISH TO JOHN PELL. 



[MS. Birch, Brit. Mus. 4278, fol. 159, Orig.] 



Hamburg, November y^p 1644. 



Worthie Sir, Manye thankes for your letter, wherein you 

 write that you have Apollonius 3 bookes of conicks in 

 Arabick, more than wee had in the Greeck, and 36 authors 

 more. I hope some of those are of the mathemathicks. 

 Howsoever I dout not but they are worthie the press. I like 

 extreamelie both the proposition and demonstration of Apol- 

 lonius in your letter ; and to my aprehension the expression 

 of the same proposition in Mersennus his book is perplexed 

 and no demonstration translated. I vvonder Goleas hath not 

 published it all this whyle ; yet being nowe in your handes, 

 I am not sorie he did not ; for I assure myself wee shall nowe 

 have it with more advantage than the loss of so much time. 

 Though I doute not but your explication of Diophantus will 

 put us in to a more sure waye of analiticks than formerlie, yet 

 I suppose there is so much to be added and explained 

 concerning analiticks that it will require a large volume, 

 and I hope you continue your intention of publishing such 

 a worke, which I beseech you thinke seriouslie of to publish 

 with all convenient speede ; for it is a worcke worthie of 

 you. I have sent to inquire at Auspurge of the famouse 

 Reieta, to procure me one of his best sorte of glasses, 

 but I have yet no answeare. If your occasions will permit 

 you, I shall take it as a favoure if you will visite my Lord 

 Widdrington, nowe in his passage towardes France. And so 

 wisshing you all happiness I remaine 



Your assured friend to serve you, 



CHARLES CAVENDYSSHE. 



SIR CHARLES CAVENDISH TO JOHN PELL. 



[MS. Birch, Brit. Mus. 4278, fol. 161, Orig.] 



Hamburg, December | g ? 1644. 



Worthie Sir, Manie thankes for your letter and Gassendes 

 his booke, which I received by Sir William Carnabye. I am 

 of your opinion that Gassandes and De Cartes are of different 

 dispositions, and I perceive Mr. Hobbes joines with Gas- 

 sendes in his dislike of De Cartes his writings, for he utterlie 

 mislikes De Cartes his last newe booke of philosophic, which 



