230

Appendix• the horizontal Line, where the Points/

h, are referred to F, G, H, in three

of* e

Observations; yet is the Ratio het^

eel 1

F H and F G the fame nearly as the R a ^between / h and / g, because thethat Distance from b, in so small andiffer little from parallel Rays. j 5

17. Hence the Cafe of the Pr°^ e ^still the fame. Therefore, let the

Sh»<’

lib

on June 19, be a H = 31766 ; on the 2

G

a F — -31751 ; and on the 22d, a31759 ; then 2 c = 30, 2 d - 16, c— 7, and a — 2, 3 — 1; then the The 0

i

■eft

c b' u — dt

0,274 = 00 D, 17

H-

■2. ad Fib c ' ' (

which is the Time by which the ^°g 0 hpreceded the second Observation. Th° ^stice therefore was on June 20 D. 17 ^

A 7 . 5 . or June 10D. 17 H. 25' 0 . 5 -18. The Difference between theof this and the other Solstice is 1 3 T ^ jji

arises ^

47': of which 1 D. iH. 12'

the Deficiency of the Length of the ^pical Year from that of the Juli& n ^ e ((as will by and by appear) and thePart 1 H. 45' from the Progression Q .^Sun’s Apogæum during that Space ofML. 136 Years, rs$i

! 9 - 1

St