f +5° ] 
her how many queftions I have aiked navigators 
“ about the iuminournefs of the feaj and how in 
“ fome places the Tea is wont to dune in the night 
“ as far as the eye can reach ; at other times and 
places, only when the waves dafh againfh the vef- 
** fel, or the oars drike and cleave tlie water ; how 
“ fome feas flaine often, and others have not been ob- 
“ ferved to diine ; how in fome places the fea has 
“ been taken notice of, to fhine when fnch and fuch 
“ winds blow, whereas in other feas the obfervation 
holds not ; and in the fame tradf of fea, within a 
narrow compafs, one part of the water will be lu- 
“ minous, whilft the other diines not at all : when, 
I fay, I remember how many of thefe odd phse- 
“ nomena, belonging to thofe great malTes of liquor, 
“ I have been told of by very credible eye-witneffes, 
“lam tempted to fufpedf, that fome cofmical law 
“ or cuftom of the terredrial globe, or, at lead, of 
“ the planetary vortex, may have a confiderable 
“ agency in the produdfion of thefe efFedts/’ 
Father Bourzes has given a dill more particular 
account of the luminous appearance of the fea ; part 
of which I have extradled from the third edition of 
Jones’s Abridgment of the Philofophical Tranfadlions, 
VoL V. Part ii. p. 213. “ When the ihip ran apace, 
“ we often obferved a great light in the wake of the 
“ fnip, or the water that is broken and divided by the 
“ fhip in its pafTage, This light was not always 
“ equal ; fome days it was very little, others not at 
“ all; fometimes brighter, others fainter; fome- 
“ times it was very vivid, and at other times nothing 
“ was to be feen. As to its brightnefs, I could 
“ eadly 
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