ERRATA FOR VOL. XVII. 



Page 70, line 6 and 13 from top, and in the rest of the article, for C, C'3 , &c. read 



C',C'2, &C. 



" " line 14 from bottom, for (o) read (0). 



. PV , PV 



" 71, " 3 from bottom, for ^^ read -— • 



" 72, " 12 from top, for "whatever may be the time of describing C"," read 



whether c" = c' or not. 

 " 72 and 73, ior parameter read semiparameler. 



[In a part of the edition the above errata were corrected.] 

 " 142, 12th line from the top, for over read at. 

 Page 196, 5th line from the top, for 6.19, read .619. 

 " 211, line 8 from top, for Oxy-chlorine, read Chloro-hydrogen. 

 " 329, bottom line, and 2d from bottom, for 



c'^cosec.^4' c' 2 (cot. "4') _ c'^cosec.=4^ c'^ d{cot.^-^) 



,.3 J.2 ^j. 5 ^.3 J.2 2dr 



Page 332, 18th line from the top, for xd" z read xd"x. 

 " 333, 5th and 2d line from bottom, and on bottom line, substitute small capitals 



for the italics x, y and z. 

 " 361, 16th line from the top, for has read had. 

 " " 19th do. do. him " it. 



