[ 486 ] 
i h .3 / .io'' / to the Eaft of Paris, and i h . to the 
E aft of Greenwich; and the laft internal contact to 
have happened at 2 i h .3o / .o9 // ,5, which is a mean 
between the obfervations of Meff. Wargentin and 
Klingenftiern. 
The City of Cajaneburg in Sweden is 38'. 40" to 
the Eaft of Stockholm, according to very late obferva- 
tions 5 and therefore Cajaneburg is i h .5i'.o7" to the 
Eaft of Greenwich. The 2d internal contad hap- 
pened at 22 h -7 / .59 // , when the error in writing down 
the minutes is corrected according to the inftrudion 
given in Philofophical Tranladions, for 1761, p. 23 1. 
Indeed (fuppofing the longitude of Cajaneburg as 
above fet down to be exad) it is very eafy to prove 
that the error of one minute was made at the egrefs 
rather than at the ingrefs. 
The City of Tobolfki in Siberia (according to the 
obfervation of the end of the folar eclipfe on June 3d 
by Mr. Chappe and Mr. Planmann at Cajaneburg and 
calculated by Mr. Pingre) is 2 h .42 / .i 1 " to the Eaft of 
Cajaneburg; and this determination is alfo confirmed 
by Mr. Wargentin’s obfervation of the fame phafe. 
Tobolfki therefore is 4 h .33 / .i8 // to the Eaft of Green- 
wich : and I fuppofe Mr. Chappe to have obferved 
the laft internal contad at o h -49 / .23 // 4., without 
making any allowance for the luminous ring which 
appeared round Venus in his telefcope. 
The Obfervatory at Upfal (according to Mr. War- 
gentin in the Philofophical Tranfadions) is iW.io" 
to the Eaft of Paris, and is therefore i h .io'.27'' to 
the Eaft of Greenwich. By taking a mean of the 
three obfervations made there, the internal contad 
happened at 2l h .28 / .o6 // . 
Tornea” 
