346 A MEMOIR ON THE THEORY OF RECIPROCAL SURFACES. [411 
p =0, 
j =o, 
c =0, 
h = 0, 
r =0, 
a — 0, 
e =o, 
% = °> 
0=0, 
5=0, 
/3 =0, 
7=0, 
i =0, 
n — n (ft — l) 2 , 
a' = ft (ft — 1), 
S'=|ft(ft-2)(ft 2 -9), 
k = 3n (n — 2), 
b' —^n(n— 1) (ft — 2) (n 3 — v? 4- ft — 12), 
k' = (n — 2) (ft 10 — 6 ft 9 4- 16 ft 8 — 54n 7 +164ft 6 — 288 ft 5 + 547ft 4 — 1058 ft 3 4-1068ft 2 —1214ft 4-1464), 
t' = (n — 2) (ft 7 — 4 n s 4- 7 ft 5 — 45 ft 4 + 114ft 3 — 11 In 2 4- 548/i — 960), 
q' = n(n — 2) (n — 3) (ft 2 4-2ft — 4), 
p' = ft (ft — 2) (ft 3 — v? 4- ft — 12), 
J = 0’ 
c' =4 ft (ft — 1) (n — 2), 
h! = %n (n - 2) (16ft 4 - 64ft 3 4- 80ft 2 - 108ft 4-156), 
r' = 2ft (ft — 2) (3ft — 4), 
a =4ft (ft — 2), 
<9' = 0, 
x , = 0 > 
(7 = 0, 
5'= 0, 
/3' = 2ft (ft - 2) (lift - 24), 
7' = 4ft (ft — 2) (ft — 3) (ft 3 4- 3ft — 16), 
i' = 0.