PHIL-OSO PHIC AL 
TRANS ACTIO MS. 
Monday, April § g i66y. 
The Contents. 
DireUions f ir obfervations and Experiments to be made by Mailers 
of Ships 5 Pilots , and other fit Perfons in their Sea-Voyages : 
Printed with Enlargements and Explications of what was formerly 
publijhtofthis Kind h frgge fled partly by Sir R. Moray fpmfy by. 
Mr.U.ook h as. The feveral wayes of obferving, both at Sea and 
Land, the Declinations and Variations of the Needle .• Some 
wayes of knowing the different Gravities of Sea-water : A Form 
of a Scheme , reprefenting at one view , to the eye , obfervations 
■of the Weather for a whole Moneth , dec. 
D I RECTI O N £ 
Pot Obfervations and Experiments to be made 
by VM afters of Ships, Pilots, and other fit 
Perfom in their Sea-Voyages « 
Hough the Art of Navigation, one oftheinoffiufeful in the 
_ World, , , be of vaftly improved , yet remain there ma- 
ny things to beknown and done, the knowledge and performance 
whereof, would tend totheaccomplilhmentof it : As the making 
of exaftA/^rof a UCoafts Ports, Harbors, Bayes, Promonto- 
i e . s . ? M “ r “ s >, Wltil their feveral Profpedts and Bearings • De- 
fcribingof Tydes, Depths, Currents, and other things confider- 
ablem the Seas: Turnings, Paffages, Creeks, Sands , Shelves, 
Rocks * and other dangers .* Nice Obfervations of the Variations 
^ T 1 and 
