WATER AND THE OCEAN. 



V 



happen to fall 



ments were always made when we had a calniy or at leafl very lit- 

 tie wind ; becaufe, in a gale of wind, v/e could not have been able 



w 



to make them in a boat. Another probable caufe of the difference 

 in the temperature of the fea-water, in the fame high latitude, 

 undoubtedly mufl: be fought in the ice -, in a fea covered with high 

 and extenfive ice iilands, the water ihould be colder than in a fea 

 which is at a great diilance from any ice. 



'€% 



For it is to be obferved, that thefe experi- OCEAN 





The Pho&phoreal Light of the Sea--Water 



9^- 



\ 



\ 



It is very well known, that the fea-water has fbmetimes a lu- 

 minous appearance, or, to ufe a more philofophical word, a phof-^ 

 pbor teal light. Many have endeavoured to give us the realcauies 

 of this phsenom-enon * i and, in confequence, fome have brought 

 us the drawing of a curious fubmarine infe^, related to the fhrimp 

 kind, which had a. peculiar luminous appearance, and afferted this 



Othe 



rs agaia 



r 



to be the caufe of the phofphoreal light of the fea -f-. 

 afcribe it to the great number of animals of the mollufcar tribe 



fwimmino; 



* The Father Bourzes, in the Lettres Edifiantcs, torn. ix.. Par. 1730, fpeaks of thaphof* 

 phoreal light of the fea with judgment ; and Hill more fo, the late ingenious philofopher, 

 Mr, Canton, PhiL.Tranf, voU.ix. p. 446, in his paper on the luminous appearance of the 

 lea. 



■■- 



t Sec the Gentleman's Magazine, for 1771 j andBafteri Opufcv.fubfec, Tom. i\ I?,..i 

 3 1 . Tab. iv., fig.. 



\ 



