ADVERTISEMENT. XXXllI 



ter, at the 76th degree of North Latitude, or even 

 a degree and a half, which is a very confiderable 

 conceffion, there would remain one degree at leaft, 

 for the extraordinary elevation of the Obferver, 

 above the Horizon of Nova Zembla. I have, on 

 thisoccafion, detedied another miflake.of the Aca- 

 demician Bouguer, who fixes the greateft refradion 

 of the Sun at no more than 34 minutes, for all cli- 

 mates. It is eafy to fee that I do not avail myfelf 

 of all the advantages given me by the Gentlemen 

 whofe opinions I am combatting. See Vol. I. Ex- 

 planation of the plate, Atlantic Hemifphere. 



All thefe twelve proofs, deduced from the dif- 

 ferent harmonies of Nature, mutually concur in 

 demonftrating that the Poles are elongated. They 

 are fupported by a multitude of fads, the number 

 of which it were eafy for me to increafe ; whereas 

 the Academicians are unable to apply to any one 

 phenomenon of the Earth, of the Sea, or of the 

 Atmofphere, their refult of the flattening of the 

 Poles, without inftantly discovering it to be a 

 miftake. Befides, Geometry alone is fufficient to 

 convince them of it. 



They have, I admit, made the vibrations of the 

 pendulum to quadrate with it ; but that experiment 

 is liable to a thoufand errors. It is, at leaft, as 

 much to be fufpeded as that of the burning mir- 



YOL. V. c ror. 



