44- Mtfcellanea Curiofa* 



Rules to all forts of Logarithms. If m be 

 yoooo &c it may be neglected, and you will 

 have Nafeirh Logarithms, as was hinted be- 

 fore but if you defire Briggsh Logarithms, 

 which are now generally received, you muft 

 divide your Series by 



2,3025850^2994045584017991454(584354207 



5ot 101488528772975033328 

 or multiply it by the reciprocal thereof, viz.. 

 0,43429448! 90325 1 8276^5 1 1 289 1 891 55050822 

 943970058035555551 14454 



But to fave fo operofe a Multiplication 

 {"which is more than all the reft of the Work) 

 it is expedient to divide this Multiplicator by 

 the Powers of z, or y continually, according to 

 the Direction of the Theorem, efpecially where 

 x is fmall and Integer, referving the proper 

 Quotes to be added together, when you have 

 produced your Logarithm to as many Figures 

 as you defire : Of which Method I will give 

 a Specimen. 



If the Curiofity of any Gentleman that has 

 leifure, would prompt him to undertake to do 

 the Logarithms of all Prime Numbers under 

 100000, to 25 or 30 Figures, I dare allure him, 

 that the facility of this Method willinvite him 

 thereto ; nor can any thing more eafle be de- 

 fired. And to encourage him, I here give the 

 Logarithms of the firft Prime Numbers under 

 20 to 5o places, computed by the accurate Pen 

 of Mr. Abraham Sharp, (from whofe Induftry 

 and Capacity the World may in time expedl: 

 great Performances) as they were communi- 

 cated to me by our common Friend Mr. Euclid 

 Speidall. 



Numb* 



