Mifcellanea Curio fa. 



A moft compendious and facile Me- 

 thod for QonfiruBing the Loga- 

 rithms, exemplified and demonfkra- 

 ted from the Mature of Numbers* 

 without any regard to the Hyper* 

 lola 9 with a fpeedy Method for 

 finding the Number from the Lo* 

 garithm given. By E. Halley. 



TH E Invention of the Logarithms is juft- 

 ly efteemed one of the moft Ufeful Dis- 

 coveries in the Art of Numbers, and accord- 

 ingly has had an Univerial Reception and Ap- 

 piaufe } and the great Geometricians of this 

 Age, have not been wanting to cultivate this 

 Subjeft with all the Accuracy and Subtilty a 

 matter of that confequence doth require ; and 

 they have demonftrated feveral very admira- 

 ble Properties of thefe Artificial Numbers, 

 which have rendred their Conftru&ion much 

 more facile than by thofe operofe Methods at 

 firft ufed by their truly Noble Inventor, the 

 Lord Napeir, and our worthy Country-man 

 Mr. Briggs. 



But notwithstanding 'all tfofcir Eedeavours, I 

 find very few of thofe who make conftant ufe 

 of Logarithms, to have attained an adequate 

 Notion of them \ to know how to make or ex- 

 amine them \ or to underftaiid, the extent of 

 D % tUc 



