ERRATA. 



Page 84, line 10 from bottom, for 1846-6 read 1848-6. 

 „ 85, „ 20 from top, for 1846-6 read 1848*6. 

 „ 419, „ 12, for change read correction. 

 „ 419, „ 17, delete " with the signs changed." 

 „ 420, „ 4, /or Dec. 29 read Dec. 24. 

 „ 420, „ 8 from bottom, for 000014 read 0-000010. 



„ 421, „ 5, for 2-22 read 222 ; for 22'9 read 23*3 ; for 15*7 read 145 ; and 



for — 7*2 read — 8"8. 

 „ 421, „ 11 from bottom./or 25-82 read 25'70. 

 „ 421, „ 10 „ for 25-96 read 25"92. 



„ 422, „ 21, for 337 read 24*1. 

 „ 521, „ 13 from bottom, /or Tiger re<z(2 Lion. 



Note, vol. xix. p. 526. 

 I did not perceive till the eve of publication that L n =0 j this will give as the equation 



to determine Q simply, Lo Q +Li^" 1 lQ g 6 Q + . . .+ W*^=0. 



eta,™ dxn-i dx 



W. H. L. R. — July 31, 1871. 



