For (in F^. ro.änd ii .) the Paral-

Iclcgumti

dT>-.

1

I

/ 6 ---

4 x f

i

6x7

1

*i ='

8x9

r

c s

IO X X II

11 —

iiX 131

u ~

I4XX5

&c

CA=

d F =

x x 21

in-.-

fK~-

a i =■

3 x 41

5x6

x

7x8

1

9 x 101

c m

11 X III

gb —

13 X 14

I

15 X 16&c.

EdC =E b d ~dfCE a i

and (In Pig. 11.) ehe TrUnglet F&* lo, u, >2,r LD-iv — CUWF

1x3x4 2

I □ tr — □/>«

b c d —

des izz

/*C =

4x5x6 2

_ x _ o/g —

6x7x8 i

x q <* 7—cd <t p

8 x 9 x x<? — 2

I Dcj — CD cm

IOX IX X 12 2

I CD e t — □ e l

12 X 13 X 14 2

_X_ □ g U — □ g h

I 4 X 15 X 16 2

Lcc.

Note. 5 CA^=dD-hd¥

i dT) b r ~h in» d¥ — /G -+ /

fbr — aq-htp

z b n — c s -h c m*/G sr e t ~hel

ifi = gu-hgbSee.

And that therefore iy the first Series half the first Term is greater than theSumm of the two next, and half this Summ of die Second and Third grea-rer than the Summ of tjie four next ; and half the Summ of thofö Four, grea-ter than the Summ of the next Light, (ßc. in infinitum. For % d D = b r+ l> n ; but i k 7 / G, therefore idDp'br-hfG, ßc. And Ä> «hesecond Series, half the lecond Term is lels than the Summ of the two next,and half this Summ lefs than the Summ of the four next, (ßc. in infinitum.

That the first Series are the even Ternis, W* the id, 41h, 6th, 8th, xoth,S?c.

C 2 • and