E R R A T A. 
P. 7. 1. 10. for confufion read concuflion. 
P. 28. 1.8 for Qj x Q! read q' x Q_*. 
P. 29. in the note , for 0037975 - read 90379755. 
P. 30. 1 . 2. /or hypothelis read hypotheies. 
Ibid, throughout the table , for $ read £ . 
P. 32. 1 . 16 .for 1759 read 
P. 175. 1 . 15. for being any number read % being any number. 
P. 176. 1 . 4. for tohat read to that. 
B B 
P. 179. 1 , 18. for — read — 
3 2 ' 
P. 203. L 24. for thing thing read thing. 
