. E.g. Suppofe Mmb nth In the Mornmg» v^^ri^ 
the Sun half appears above the Horizon , the L 
Watch points at . — . — . ^ j 
In the Evening , when thd Saft appears !^alf fet , at — 
To know by the Watch the time elaps'd between ( 
both , ftsbdud the time of the rifjtis — ^ ■ — .» ( ' 
From — — 
Whereunto adding, the time of the fetting ^ — 
There comes for the triue dapfecf between them 
Whereof the fialf is 
— ,6 
— 1 
Whichaddedto the timeof the Suns rifing — - — . 5 
There comes the time of the Watck wi en the 1 
Sun was in the Soith — — . / 
To ?whic^ adding the aEqmtioa df the i rth of ^frcfe 
TheSummeis • ^-r-- — •■ — • 
Seven days rrfter, vi^. M&rch 18, let the rifing of the ? ^ 
Sun be ofcferv'd, and the Warcfe poir t then at — 3 
And at his fetting, let the Watch point at — - — - — - 
yo find the time elaps*d between them, fubduft I _ 
, thetitoe of the rifing , — a.. -, , . , ' 
From-- 
Refts^ 
To which addc the time af the fetting — — . — 
And you'i fiiKl the time pafi bstween them — ^ — 
Whereof the half is — 
Whtclj addc to the time of the rifing — » — .-^ ■ 
And you have the time when the Sun was' in the South — 11 
Wherelinto adding thc^^quation oi MitCh 18 o 
TTie Summe is — — ~ 1 1 
Which Summ: if it had agreed with the firft , vix» — - 
12 4^ 
then had the watch been fet to the right meafare 5 but fee- 
ing the latter is lefs than the former 5 the difR^ 
49. fee-, the Watch hath by fomach, in 7. days^gone too 
flow-, which 49^e'r. divided by the number of days^ you have 
TSec. for the daily difference and by fo much the Watch 
goes too flow in 24, hours. 
. You may alfo^ inftead of the Suns rifing and fetting , take two 
equair Altitudes of the Sun^ before" and after Noon, and 
having noted the time given by the Watches at the time of 
both the Obfervations , proceed with it in the fame manner^, 
as was luft nowdireded for obferving the Sun in the Horizon, 
fo^ either of which way^ there may be fome Error ^ caufed by 
Rrrr "the 
