ERRATA. 
Page 6, 1. 14 from top, os “1847,” read “1845.”—P. 7, 1.7 from top, for “ Regent” 
read ‘* Honorary Member.’ 
P. 76, 1. 27 from top, for “ apensd read “ protected.” 
P. 53, line 13 from bottom, for “t= 1, 2, 3,” read “¢=0, 1, 2, 3.” 
P. 136, foot-note 3, insert ‘ sa before Stoffernes. 
P. 146, line 18 from a. in table, eg “<oy. * *” read “ 72-3." 
p. 148, in formula (47), for 2 5 tread % -- 
. 149, 1. 19 from bottom, be 7! ae 
P. 312, foot-note 1, for “ this 
memoir,” ae “the memoir of which this is an abstract.” ; 
