Page:Philosophical Transactions - Volume 001.djvu/148

, Ordinary and Extraordinary, of the Tides; as, their precise time of Ebbing and Flowing in Rivers, at Promontories or Capes; which way their Current runs, what Perpendicular distance there is between the highest Tide and lowest Ebb, during the Spring-Tides and Neap-Tides; what day of the Moons age, and what times of the year, the highest and lowest Tides fall out: And all other considerable Accidents, they can observe in the Tides, cheifly neer Ports, and about Ilands, as in St. Helena's Iland, and the three Rivers there, at the Bermodas &c.

4. To make Plotts and Draughts of prospect of Coasts, Promontories, Islands and Ports, marking the Bearings and Distances, as neer as they can.

5. To found and marke the Depths of Coasts and Ports, and such other places nere the shoar, as they shall think fit.

6. To take notice of the Nature of the Ground at the bottom of the Sea, in all Soundings, whether it be Clay, Sand, Rock, &c.

7. To keep a Register of all changes of Wind and Weather at all houres, by night and by day, shewing the point the Wind blows from, whether strong or weak: The Rains, Hail, Snow and the like, the precise times of their beginnings and continuance especially Hurricans and Spouts; but above all to take exact care to observe the Trade-WinesWinds [sic], about what degrees of Latitude and Longitude they first begin, where and when they cease, or change, or grow stronger or weaker, and how much; as near and exact as may be.

8. To observe and record all Extraordinary Meteors, Lightnings, Thunders, Ignes fatui, Comets, &c. marking still the places and times of their appearing, continuance, &c.

9. To carry with them good Scales, and Glasse-Violls of a Pint or so, with very narrow mouths, which are to be fill'd with Sea-water in different degrees of Latitude, as often as Rh