40 
MR. A. B. KEMPE ON THE THEORY OF MATHEMATICAL FORM. 
249. If n— 9 we have f— 2, 
II 
r—1 
EH 
b 
c 
cl 
e 
f 
9 
h 
i 
b 
c 
d 
e 
f 
9 
h 
i 
a 
c 
d 
e 
f 
9 
h 
i 
a 
b 
d 
e 
f 
9 
h 
i 
a 
b 
c 
e 
f 
9 
h 
i 
a 
b 
c 
d 
f 
9 
h 
i 
a 
b 
c 
d 
e 
9 
h 
i 
a 
b 
G 
cl 
e 
f 
h 
i 
a 
b 
c 
d 
e 
f 
9 
i 
a 
b 
c 
d 
e 
f 
9 
h, 
T,=a 
b 
c 
d 
e 
f 
9 
h 
i 
b 
c 
a 
e 
f 
cl 
h 
i 
9 
c 
a 
b 
f 
cl 
e 
i 
9 
h 
d 
e 
f 
9 
h 
i 
a 
b 
c 
e 
f 
d 
h 
i 
9 
b 
c 
a 
f 
cl 
e 
i 
9 
h 
c 
a 
b 
9 
h 
i 
a 
b 
c 
cl 
e 
f 
h 
i 
9 
b 
c 
a 
e 
f 
cl 
i 
9 
h 
c 
a 
b 
f 
cl 
e. 
250. If n= 10 we have f— 2, 
T x = a b c cl e f g h i j 
b c cl e f g h i j a 
cdefghij a b 
d e f g h i j a b c 
e f g h i j abed 
f g h i j a b c d e 
g h i j a b c d e f 
h i j a b c d e f g 
i j a b c cl e f g h 
jab e d e f g h i. 
