[Sidenote: How to note downe in his Iornall of the voyage, his dead reckoning, and other obseruations.] And in keeping your dead reckoning, it is very necessary that you doe note at the ende of euery foure glasses, what way the shippe hath made (by your best proofes to be vsed) and howe her way hath bene through the water, considering withall for the sagge [Footnote: i.e., Current.] of the sea, to leewards, accordingly as you shall finde it growen: and also to note the depth, and what things worth the noting happened in that time, with also the winde vpon what point you finde it then, and of what force or strength it is, and what sailes you beare. But if you should omit to note those things at the end of euery foure glasses, I would not haue you to let it slip any longer time, then to note it diligently at the end of euery watch, or eight glasses at the farthest. Doe you diligently obserue the latitude as often, and in as many places as you may possible, and also the variation of the Compasse (especially when you may bee at shoare vpon any land) noting the same obseruations truely, and the place and places where, and the time and times when you do the same. [Sidenote: For noting the shape and view of the land at first discouery, &c.] When you come to haue sight of any coast or land whatsoeuer, doe you presently set the same with your sailing Compasse, howe it beares off you, noting your iudgement how farre you thinke it from you, drawing also the forme of it in your booke, howe it appeares vnto you, noting diligently how the highest or notablest part thereof beareth off you, and the extreames also in sight of the same land at both ends, distinguishing them by letters, A. B. C. &c. Afterwards when you haue sailed 1. 2. 3. or 4. glasses (at the most) noting diligently what way your barke hath made, and vpon what point of the Compasse, do you againe set that first land seene, or the parts thereof, that you first obserued, if you can well perceiue or discerne them, and likewise such other notable points or signes, vpon the land that you may then see, and could not perceiue at the first time, distinguishing it also by letters from the other, and drawing in your booke the shape of the same land, as it appeareth vnto you, and so the third time; &c.