Page:Philosophical Transactions - Volume 004.djvu/59

 set to its right measure, but that B. goes every day 7 sec. to slow, and C. every day 12. see. too fast. Some days after, suppose the 5th of May, desiring to know the Longitude of the place where you are at Sea, you observe the time of the day

'Tis true, that from the same reckoning it may be concluded, that you are 180. deg, more Easterly, which happens because the Hour-Index goes round in the space of 12. hours in the Watches; but the difference is so great, that one cannot be deceiv'd in it; else the Watch might be so made, that the Index shall goe round but once in 24 hours.

Since that for finding the Longitude, the Time of the day Rh