172 
Corrigenda, p. 142, &c. 
In the group of order 6-4-2, for 1823 read ^ + ^41 > 
in that of the order 5*2, erase 10^ ; 
in the second title, page 144, for rea ^ ^42 2 ^ 
in the eighth title of that page , for 12^2 + 8g read 4^2 + I3g; 
in the ninth title, p. 142, for 4g 4 read 
in the title 8*6*4 * 2 , for 52^2 + 24^2 read 2 823^2 + 36^2 + ^41 4 ’ 
Addenda. 
4 = 1 + 322, Q ~ 1- 
6*2 = 1 + ^22^2 + Sg2, Q = 1^« 
6*4 = 1 + 6^ 2 + ^2 2 l 2 "** ^32 ■*" ^2 3 ’ Q = ^* 
8*4 = 1 + ®2 2 ! 4 ^2 4 "** ^4 2 ’ Q ~ 210. 
8*4 = 1 + ^22^4 + 4^2 + 524 + 16^22, Q = 315. 
8*4 = 1 + ^22^4 + 4^2 + 5 2 4 + 16g, Q = 315. 
8*4 = 1 + 8^2 + ^2 4 "** ^2 2 1 4 ®2 3 l a ®8* Q ~ 330. 
8*8 = 1 + 1022p + ^42l 2 ^ ^4 2 + ^2 4 + ^3g + Q = 315. 
8*8 = 1 + 4^ 4 + §23^2 + ^22p + £>2 4 + 20^2 + 20^2, Q = 315. 
8-6*4 — 1 + 3^2 j4 *+* 12^2 + 1324 + 32g 2 ^2 + 32^ *** ^^2 3 1 2 
12^14 + 488 + 12422 Q = 105. 
The omission of the above-given groups of 6-2 and 6*4 in my first 
processes was the main cause of the above errors and defects. 
