FLUXIONS. COMMERCIUM EPIS7OLICUM 49 



Illtistrations : 



Commercium | Epistolicum | D. Johannis Collins, \ et aliorum | de | 

 Analysi promota : | jussu | Societatis Regise | In lucem editum. | 

 Londini : | Typis Pearsonianis, Anno MDCCXII. | 4to. 



Collation: Title, Ad Lectorem, 2 11. + pp. (i) (122) + Errata sic Corri- 



gantur, i If. Sigs. A Gg 2 , Hh 4 . 



I have met with two varying copies of this work, which I call Edition A and Edition B. 

 The variations are as follows : 



Edition A : [237 



page 34, the catchword at the bottom of the page is 'nitu.' 

 page 35, lines first and second are : 



( 35 ) 



' rei est : quinam sint illi numeri, quorum Tabulam tile exhibit in infi- 

 infinitum continuandam,' &c. 



Edition B: [238 



page 34, the catchword is corrected to 'rei.' 



page 35, the first line has been corrected and re-set : 



( 35 ) 



' rei est : quinam sint illi numeri, quorum Tabulam ille exhibit in 

 infinitum continuandam,' &c. 



During the printing many cancels appear to have been made, and these are plainly 

 shown by the reprinted pages having a guard left ; these guards show conclusively by the 

 wire-marks to which pages they belong. They are pp. 43 and 44, 71 and 72, 99 and 100, 

 101 and 102. 



Commercium | Epistolicum | D. Johannis Collins, \ et aliorum, | de | 

 Analysi Promota, | Jussu Societatis Regiae in lucem editum : | et 

 jam | Una cum ejusdem Recensione prsemissa, & judi-|cio pri- 

 marii, ut ferebatur, Mathematici | subjuncto, iterum impressum. | 

 Londini : Ex officina J. Tonson et J. Watts. MDCCXXII. 8vo. 



[239 

 Collation: Title, Ad Lectorem, 4 11. -fpp. [i] [250] -f Errata, i If. (on 



the reverse of which is a list of Books ' Lately Published, neatly Printed 

 in Twelves'}. Sigs. A 4 , B Q 8 , R 4 , S*. Pages 145 to 176 are wrongly 

 paged, repeating the paging from 129 to 160, and p. 190 is printed 

 [109]. 



4 



