C E AN. 



REMARKS 



O N 



THE 



the fea aflumes a grey hue, and feems turbid, as if it had loft it 

 limpidity. But often you are deceived by the fituation of the rK.y 

 and clouds. Dark, cloudy weather involves likewife the whole 



H 



le. A ferene and clear iky tinges the waves with 



ocean in a grey h 

 the fineft beryllii 



blueifh-green 



If a cloud appears, it 



gives to a fpot of the fea a hue quite different from the refl j and, 

 if not w^ell attended to, often alarms the navigator with the 

 fear of foundings, or even fhoals. A judicious eye, condutfted by 



—» 



long experience, can alone diftinguifh properly in thefe cafes. 

 But, upon the whole, it cannot be too much recommended to na- 

 vigators, efpecially in unexplored feas, to make ufe of the lead in 

 ey,ery doubtful fituation *. 



\ 



Of the Saltness of the Ocean. 



It has been fufpecfled, that th.t fait nefs of the ocean is not every 



where equal 



Some affert the fea to be falter under the Line tha 



) 



towards the Poles -f- -, that the great oceans are falter than the 



r 



fmaller feas, which are almoft included by land, viz. the Baltic, 

 the Mediterranean, the White Sea near Archangel, the Perfian and 



- 



M 



the Arabic Gulphs, &c. 3 that its faltnefs increafes with its 



r 



large 



* See Mr. Dalrymplcs Memoir of a Chart of the Southern Ocean, p. 7.. 



f BufFon's Hifloire Naturelle, torn. 2. p. 79, edit. mi2nw. 



