XXXII ADVERTISEMENT. 



fhores of the northern iiles, the feeds of plants 

 which grow no where but in Jamaica. Cook hke- 

 wife aflures us, in the Journal of his Voyages, as 

 an undoubted faft, that there are found, every 

 year, on the coaft of Iceland, in great quantities, 

 large flat and round feeds called the ox-eye, 

 which grow only in America. 



X. and XI. The aftronomical proofs, of the 

 (elongation of the Poles, are three in number. The 

 two firft are Lunar. I mean the two-fold obferva- 

 tion of Tycho-Brhaè and of Kepler, who faw, in 

 central eclipfes of the Moon, the fhadowofthe 

 Earth lengthened at the Poles. I have quoted it 

 Vol. I. Study IV. It is impoiTible to oppofe any 

 thing to the ocular teftimony of two Aftronomers 

 of fuch high reputation, whofe calculations, fo far 

 from being favoured, were deranged, by their ob- 

 fervations. 



XII. The third aftronomical proof, of the elon- 

 gation of the Poles, is Solar, and refpeds the 

 North Pole. It is the obfervation oÇ Barents ^ who 

 perceived, in Nova Zembla, in the 76th degree of 

 North Latitude, the Sun in the Horizon, fifteen 

 days fooner than he expecfled. The Sun, in this 

 cafe, was two degrees and a half more elevated 

 than he ought to have been. Allowing one de- 

 gree for the refradion of the Atmofphere, in win- 

 ter, 



