in order to af certain the height of Mountains . 595 
Table of heignts, See. continued. 
4- or *— the Above the 
Lake of Geneva. Mediterranean* 
Mount Vefuvius, at the bafe of the cone, — ■ — 2021 
Top of the mountain Somma, — — 373^ 
The fummit of Mount /Etna, — — 10954^7 
The following heights are determined from correfponding obfervations by 
Mr. messier at Paris, whofe barometer is fuppofed 108 feet above 
the fea. 
Barberino di V aldenfa, between Boggebonri and Tavernelle, 
Modena, a l’Albergo nuovo, — — 
Montmelian, at 20 feet above the river, — * — 9 
Monte Vifo, by an obfervation from Jurin, by means ] 
accurate, g — — — i 
Monte Rofa, as meafured geometrically by the Father ^ 
beccari a, being the fecond mountain of all the f 
Alps, — ~ — J 
Pont Beauvoifin, — — 
La tour du Pin, 4 — — — 
Verpilliere, — " *— • — 
974 
2*4 
81 1 
9997 
15084 
7°i 
938 
56 6 
his Hiftory of this Mountain) “ 1677 French feet only, the difference of his 
barometer at the top and at the level of the fea being no more than 23 \ French 
lines zz 2.065 Englifh inches, which was certainly a miftake of little lefs 
than 2000 feet in the refult. The Abbe nollet in 1749 found the fall of the 
quicklilver 40 lines : zz 3.55 inches Englifh; and, if this obfervation is to be 
depended upon, the fummit of this volcano has rifen within thefe 27 years 
more than 330 feet perpendicular. 
(I) I have ventured to compute the height of this celebrated mountain from 
my own tables, though from an obfervation of Mr. de saussure’s in 1773, 
which that gentleman obligingly communicated to me. It will ferve to fhew, 
that this volcano is by no means the higheft mountain of the old world ; and 
that Vefuvius, placed upon Mount ./Etna, would not be equal to the height of 
Mont Blanc, which latter I take to be the moil elevated point in Europe, Alia, 
or Africa. 
The circumference of the vifible horizon on the top of Mount /Etna, allowance 
being made for refraCliun, which I cflimate at 6', is 1093 Englifh miles. 
4 H 2 Table 
