800 



Mr Glaisher, On Legendres formula for [Dec. 8, 



It is interesting to compare the numbers given by this formula 

 (in which A is ultimately equal to unity when x increases in- 

 definitely, as should be the case) with the numbers of primes 

 counted ; and the following table was accordingly constructed in 

 order to exhibit the deviations. 



TABLE YII. 



§ 11. In the next table are collected from Tables V., VI., 

 VII., for convenience of comparison, the differences between the 

 results of the enumeration and the numbers given by each of 

 the three formulae 



log x — l 



.{a), 



logo;- 1-08366 



■{h), 



.(c). 



loof re— 1 — 



loc 



