ri'KUS ON BO1 INT! IK 



the parte proportional^ when the tabular dilli-rences arc i 

 to equalitlC, by \\hiehe meanes you sliall come to the imme- 

 rator ol'your fraction \\hose (Iciioiiiinator is aluaio loot) etc. 

 For example, the log. of K) is l.OOOO etc.; therefore the I. 

 the \ 7 of K) must be ().")()()()() (for \ve mu-t very warily iv 

 the characteristica, otherwise theaus\\er \vil l)c false,, alter 

 Che characteristic and it may be -I :>()<)()() and ill 32 chiliads 

 you shall liude the absolute number next under that whiche 

 you seeke is 3 1 (522 ; this must be augmented by the part pro- 

 portionall, whiche is 7763, so that the number is 3162277<!3 ; 

 now seinge the characteristic is 0, till I did augment it, it is 

 apparant that the roote of 10 is 3|ggggf, or rather 

 3,H>2277G3 as I usually write it. But this aggreethe not withe 

 the roote sett downe in the 10th page of my booke. I must 

 confesse it. The parte proportionall is alwaies in these cases 

 somewhat defective: see my 16, cap. 



3. Concerninge Mr. Wingate's booke I hope well that all 

 he saithe are true ; but I have not so advisedly looked on it, 

 that I may justly ether except or approve all; but if you 

 please to mention in your next any particular, I shall tell you 

 mine opinion. 



4. My desire was to have those chiliades which are want- 

 inge betwixt 20 and 90 calculated and printed, and I had 

 done them all almost by myselfe and by some frendes whom 

 my rules had sufficiently informed, and by agreement the 

 busines was conveniently parted amongst us: but I am 

 eased of that charge and care by one Adrian Vlacque an Hol- 

 lander, w r ho hathe done all the whole 100 chiliades, and 

 printed them in Latin, Dutche and French e, 1000 bookes in 

 these three languages, and hathe sould them almost all ; but 

 he hathe cutt of four of my figures throughout, and hathe left 

 out my dedication, and to the reader, and two chapters the 

 12 and 13, in the rest he hathe not varied from me at all. 



And thus I have desired to make an amendes for my an- 

 sweringe no sooner. If yet there remaine any scruple, if you 

 please to write the thirde time I shall be desirous to give you 

 further satisfaction. And so commendinge you and your 

 studies to the gratious blessinge of the Almightie, I take my 

 leave, ever rcstinge, 



Your very lovinge frende, 



HENRIE BRIGGS. 



