CORRESPONDANCE. t66o.

45~

/A W. sec. H. m. sec.

E.g. Suppofe Tt~~A nth in the Morning,

when the Sun half appears above the Horizon, the

Watch points ac 5 30 io o 10 g
In the Evening, when the Sun appears half

fët,at. 5 20 6 !t 1 59 50
To know by the Watch the times e!apPd be-

tween both, (ubdu~t the time of the rifing. 5 30 io
From. 12 0 0

Refts. 6 ap 50

Whereunto adding the time of the fetting. 5 20 6

There cornes for the time elapf d between them t ï 49 56 <~ 49 56
Whereofthe hatfis. 5 54 58 5 54 58
Which added to the time of the Suns rifing. 5 30 !0 o to 3
There cornes the time of the Watch when the

SunwasintheSouth. n I 25. 8 6 5 t
To which adding the Aequation of the t ith of

7~ 0 7 45 0 7 45
TheSumrneis. 1 1 32 53 6 46
Seven days after, viz. M~~A 18, let the rifing 1

oftheSunbeobferv'dandtheWaichpointthenat 5 ï9 4 1 II I 58 57
Andathisfetting,!et the Watch point at. 5 25 2 i o 4 55
To find the time elapf'd between them, fub- Oy,
duét the time of the riung. 5 !9 4 i ï 58 514)
From. 12 o o 24 0 0
Refts. 6 40 56 12 t 3
To which adde the time of the fetting. 5 25 2 0 4 55
And you 'I (ind the time pait bqtween [hem. 12 5 58 2 5 58
Whereof the halfis. 6 2 59 6 2 59
Which adde to the time ofthe rifing. 5 !9 4 II I 58 57
And you have the time when the Sun was in

the South. Il 1 22 3 6 t 56
Whereunto adding the Aequation of~c/t! 8 o !o o !o t
TheSummeis. t! 32 6 !t t 57
WhichSumme if ithad agreedwith the firft,viz. !t 1 32 53 6 !2 46

then had the watch been fet to the right meafure; but feeing the latter is lefs
4) Lisez: 5~.