[??] 
times appears oval, its lead Axis being that about which 
it makes its Revolution. 
This Opinion of Sir lfaac has likewife been main- 
tain'd by Mr. Huygens , though with fome fmall Dif-* 
ference. But in 1691, Mr. Eifenfchmid * having 
compared the Meaiiirements of the Earth made in dif- 
ferent Latitudes, as that of Father Rtccioli in Italy * 
of Mr. Picart in France , and of Snellius in Hol- 
land 5 and having found that the Degree, which re- 
fused fromthofe different Meafurements, continued to 
grow lefs in drawing nearer the Poles, (which is quite 
the contrary of what follows from the Earth's Figure 
fuppofed by Sir lfaac and Huygens ) Mr. Eifen- 
fchmid was thereupon of Opinion, that the Earth was 
longer at the Poles. 
This Opinion of Mr. Eifenfchmid was afterwards 
confirm'd by the late Monf. Cajfmi , in the Obferva- 
tions of the Meridian of Par is. For in 176!, having 
carried on thefc Operations to the Pyrenadn Moun- 
tains, which is a Space of above feven Degrees and a 
half, lie found, that as he advanced to the South thefc 
Degrees cncreafed Part, or 72 Toifes each De- 
gree. 
Since the Meridian of Paris was, in 1718, carried 
on Northward to the Sea, Monf. Caffmi y the Son, 
found, upon comparing more than eight Degrees, 
which this Meridian contains from Sea to Sea, that 
the Increafe, going Northward, was but from 60 to 
* Jo. Cafp. Eifenfchmidii Diatribe defigura telluris Elliptico-Sphae- 
roide } ubi una exhibetur ejus magnitude) per lingulas dimenfiones, con- 
tenfu omnium Obfervationum comprobata. Argemorati* apud Joh. 
Frider. Spoor. \ 6 y 1 410, (pag. 5+. cum fig.) 
E 
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