254 
THEORY OF COLLINEATIONS. 
TYPE ae 
A.—Groups of the First Class. 
HiGUCA AN) (. 1, SameasiGa( AAW) o._ cigertehe eet (28) 
\ G55 (A Allaire Saree) (ALA) ed te ne eo ee (18) 
Gil) =< Nex Same aa") Se ce he eee (19) 
WGMCAU) ae Tineal element 2ote re reese a sent: (7) 
lqy(Al J. “ bee EE GET ae! ee be (7) 
$ Gy(Al) }- “ it aed Se ae ie ene eee (9) 
B.—Groups of the Second Class. 
{ G(AA'l), , Same as G;(AA‘l) and pencil of path- 
CULVES irc. tee eit. eee (36) 
\ Gi! (AA)al- SamerasiGa (4140) seen eiees.© (25) 
(Gua ae SamievseiG, (ll) ih Seceecpe ch ore en (26) 
\ Gs (Al)al- inealvelementacesasensceeecc creer eee (15) 
(G/ (AD), 5+ “ CERES OAL eee aa tony Aen (16) 
ONe3) TOU 
{ G," (AlS) fo Lineal element Al and pencil S of ©! con- 
ics having contact of third order with 
Watt Al sca yee meen ter cto (87) 
7 G.! (ALIN) - Lineal element Al and net N of «2 conics 
having contact of second order with l 
Pray plain ed, Se ere T AM ee AT (24) 
§ G;// (Al) 3 Lineal element Al and * conics touch- 
EU GLA Re NST a (13) 
TYPE IV. 
{M(Al $ All points on J and all lines through A.... (38) 
\ H,(W) / : The lines / and l’ and all points on/....... (32) 
( H, (AA’) \ The points A and A/andalllinesthrough A, (33) 
(H(A) ]- All lines through A............. 000.0. -00+ (22) 
lH, 1) SJ All pomntacotied con ei see etek (21) 
APARD We 
CAL) he All points on land all lines through A.... (39) 
\my(A))- All lines through A...........2. 020.00 000 (30) 
| H.! (1) ) : PNM Fey) Oa nacion soosaGans0ascpD0adAdC (29) 
(21) 
(14a) 
(146) 
(5a) 
(5b) 
(7) 
(27) 
(19a) 
(196) 
(12a) 
(12) 
(28) 
(18) 
(10) 
(29) 
(24a) 
(24D) 
(160 ) 
(16a) 
(30) 
(22b) 
(22a) 
