At the Rififlgand Setting of the San, when it is klf above 
thc Horifon j marke the time of the day, which the Watches ^ 
then fliew-, and though you have in the mean time fayl'd on 
it is not confiderable. Tchen reckon by the Watches , w hat 
time is elapfd between them, and add the half thereof to the 
timeof the E^ifing , an J you (hall have the time by the Watches, 
vrhm the Sun was at South to whicli is to be added the JE- 
quation of the prefent day by th^ Table. And if this together 
makes 12 . hours > then was the Ship at Noon mdei: the fame 
Meridian, v^here the Watches were fet with the Sun, But if 
the fumme be more than iz, then was flite at Noon under a 
mre We^rrlj Mmdim tf and if lefs, then qnder z ntireEafley 
/y that by as many times 1 5. degrees, as that Summ ex-^ 
ceeds or comes fhort hours of 12 : as the Calculation thereof 
hath been already delivered. 
Suppofe, e. g. that the Watches A and B, as before , were 
fet with th^ Stin attheplace whence you parted , the 20th of 
^^ebr y andthe Indexes, fet tothcHour^ min. and fecond j (hev/- 
ed by the Sun, abating the ^Equation of that day ^ viz ,2, 
min, and 20. feconds 5 the Watch A being reduc'd to the right 
meafure 5 and B going too flow by 7- fee. a day. Afterwards 
ont the 22 th of May^ defiring to know the Longitude of the 
|)lacelto which you arc come, youobfer^e inthe Morning the Sun 
h. mi^o. fee* 
half above the Horizon when the Watchpointsat-a— — 30--10 
And in the Evening, the Sun being half under the? 8— -ao 
Horizon, when the fame Watch points at — ' ' 
Tafind the Time elapf d between them^ fab-^^ .^ ?o— 10 
dutfting: the time of the Riling — — . — 3 
There remains -2p — 50 
Adding thereunto the time of theSetting— 3-— 8—40 
You have for the time elapPd between the Obfer-T ^ g 
various — — : — — — — ^ 
Whereof the half — ~— ^ — — (5-'-ip- -i 5 
Being added to the time of Riffng ^ 3, —50- 1 o 
You have the time by the Watch A ^ when the To 
Sun was in the South — —1^.5—« ™-^— 
