LETTERS ON SCIENTIFIC SUBJECTS. 7$ 



SIR CHARLES CAVENDISH TO JOHN PELL. 



[MS. Birch, Brit. Mus. 4278, fol. 151, Orig.] 



Hamburg, Aug -fg, 1644. 



Worthie Sir, Douting that my letter of last week came 

 not to your handes, makes me no we trouble you with this. 

 I give you manie thankes for your letter, and am most glad 

 that you are well and in so good a condition ; I doute not 

 but you have hearde the occasion of oure comming over,, I 

 take no pleasure to write it, nor I suppose you to reade it ; 

 Gods will be done, and to that I humblie submit. I desire 

 you will be pleased to send me De Cartes De Principiis Philo- 

 sophies, and none of his olde bookes, except there be some 

 addition or alteration. I desire your opinion of the late dis- 

 coverie of newe stars ; I see Gassendus doutes of it. I desire 

 to knowe if Mr. Warner's Analogicks be printed, and if there 

 be any newe bookes of Analiticks, but I expect no greate 

 advancement of Analitickes but by yourself, therefore I be- 

 seech you proceede in your intended worcke. I am likelie 

 sometimes to trouble you for bookes, therefore I desire you 

 will let me knowe howe I maye returne monie to you. I 

 longe to see you. In the meantime I hope to converse by let- 

 ters. I remaine 



Your assured freind to serve you, 



CHARLES CAVENDYSSHE. 



JOHN PELL TO SIR CHARLES CAVENDISH. 



[MS. Birch, Brit. Mus. 4280, fol. 101.] 



Amsterdam, August 7, 1644. 



Right Honourable, Nine days agoe was your answere to 

 mine left at my lodging by a man that would have nothing 

 for postage. Had I scene him, perhaps I might have learned 

 some conveniency of sending backe to you againe, so that my 

 letters might be lesse chargeable than if they come thus single 

 to you by the ordinary poste. 



I had sent you J3es Cartes his new booke forthwith, if 

 your letter had given me direction how to convey it to you ; 

 which, seeing you have not done, I resolve to send it to Ham- 

 burg by the next ship, to be left for you either at Berthold 

 OfFermans, a booksellers ; or else, at some other friends house 

 which I shall signify by letter. Though the title-page of the 



