[ 48 7 ] 
Tornea 0 has been generally fuppofed to be 
i h *27'3o" to the Eaft of Paris; but with this differ- 
ence of meridians, the obfervations at Tornea 0 , tho’ 
made by Mr. Hellant, a very excellent obferver, will 
give a parallax of the Sun much lefs than the other 
obfervations made in high Northern latitudes. In 
order to fettle the longitude of this place, I am of 
opinion that we may have recourfe with fafety, and 
without incurring the charge of reafoning in a circle, 
to the oblervation of the tranfit itfelf; I mean the 
obfervation of the internal contact at the ingrefs. 
Whether we fuppofe the Sun’s parallax to be 8" or 
lo", the firff internal contact would have happened 
foonerat Tornea 0 than at Stockholm 19" or 24'''. As 
the Sun’s parallax will readilly be allowed to be more 
than 8 V , I fhall fuppofe the firff internal contact to 
have happened 2 \" fooner. Tornea 0 is therefore 
24/ 55" to the Eaft of Stockholm, and confequently 
i h * 37 /,22// to the Eaft of Greenwich. I fhall make 
ufe of Mr. Hellant’ s obfervation of the internal con- 
tad; at 2i h .54 / .o8 // in preference to that of Mr. La- 
gerbom. 
Abo, the capital of Finland, where Mr. Juftander 
obferved the laft internal contadat 2i h < 45 / .i9 // (when 
a correction is made in the minutes) is i h . 1 1 / .29 // to 
the Eaft of Paris, and i h . 23 / . 34 // to the Eaft of 
Greenwich. 
At Hernofand, which is i h .i T.29" to the Eaft of 
Greenwich, I fhall fuppofe the 2d internal contad 
was obferved at 2i h .2b / .52 // , as publifhed in the Phi- 
lofophical Tranfadions by Mr. Short from the Swed- 
ifh ads. 
1 find the Ifland of Rodrigues by comparing three 
obfervations of eclipfes of Jupiter’s latellites with 
R r r 2 others 
