[ 554 ] 
Hence, writing a for one fourth of the periphery 
of the circle whofe radius is i, and taking x equal 
to the faid radius, we find hyp. log. —=== = ; 
and, confequently, hyp. log. - i = anc ^ 
hyp. log. — i = + 
2 a 
V- 
2 . 
The hyp. log. of - being = # + — + — 4“ —> &c> 
I * J X^" 
F = fluent of ~ x hyp. log. is = x + + p 
+ X" &c - 
F = fluentofiF = x + ^+ 8c. 
f-flaentofiF«* + $ + 5+^ 8c. 
F = fluent ofjF = # + "T+p'+^T> &c. 
&c. 8c. 8c. 
*> 
O' 
By writing, in the firft equation in the preceding 
article, - i.nftead of *, we have 
Hyp. log. _L_ = *-« + &e - 
But the hyp. log. of is — hyp. log. ^ __ i 
i 
hyp. 
