[ 3 °+ ] 
Art. 3.) exp reflex the ratio of to A H* the ratio 
of Qj to A H mull be a £ x 1 — 1 -LV and as 
P q I 
has been all along fuppofed z is the ratio of h t to 
A H. Wherefore, by Squaring the curve R h t Q, it 
will appear that the ratio of R h t Q^to H O is 
a b X z — 
n i z 3 
2 -3 pq 
I 2 
+ -Z-X 
n J 2 5 
n 
2 • 5 P'q % 4 X 
X ; 3 ■ 7 -f- &c. which — ~ — ) is 
2.7 p i q i 1 V 2 p q / 
P f v' 2 p q 
a b X 7 ^ 7 r X 2 — 3 
77Z 3 Z 3 
« — 2 m s z % 
4- 2 « X 5 2 » 
m 9 z 9 
« — a m y z 1 n — 2 n — 4 n — 6 
x — - X -1 X — - X X 
3 « 7 2 n 3 « 4 « 9 
• 71^" 
— &c. Which laft feries when — — = i, and con- 
p q 
lequently the ordinate Qj vanishes, becomes B — 
B 3 , B l 
-r 
1 B 5 B* — « 1 B* — a B 7 .. 
2 px~ x _ ^ x 1 j x ^ A” 
n 
3 • 3 B- - 5 
taking B x . 
10. If B*=~ the ratio of the whole figure 
R Q_W h to H O is -^44? x a /x B — HZ~Z 
* V « 3 " * ^ 
B* j g 5 
— X — — GV. Now, (by Prop. io. Art. 4. of 
the Effay) the ratio of A C F H to HO is 
x 
