I^IE. W. SPOTTISWOODE ON THE CONTACT OF CUEVES. 
47 
Similarly, for the second minors, 
af^, 2xz=x^{n—lY^^, 
2xz, 2yz, z^ =z^{n—l)~^Jl, 
af, 2t/z, 2zx=2(^y 
3^, 2.ry, 2yz=2^(^) -yx‘{n-l)-m, 
2xy, 
2«, /,2j,z=2^(^)-z/(«-l)-H, 
2xy, 2yz, z’ =2(^) 
2zx, 2xy, 2 " =2^^^) -xz\n-l)-m, 
f, z\ 2yz = , 
f, 2%22x = -{(^)’^+y2’(«-irH}, 
y\ 2 = , 2xy = - [(^)' ^+y»z(«-l)-^H|, 
2% a:>,2y2 = -{(^)'^+2’^(»*-l)-'Hj, 
z\ a?,2zx= 
2 % x\2xy=-\YY) 
/ .2y2 = -{f^)’^+^X»-l)-4 
/,22x = -|(^) ^+^y(n-l)-*H|, 
4, 
/ , 2" = 
2yz, 2zx, 2xy=—2'^^^—2xyz{n—l)-^'E.. 
