438 M. de luc’s Barometrical Obfer vat ions on 
In. L. 1 6th of Lines. Log. 
At 1 h. at the 
entrance of the gallery . n £ ^ 
. „ . .. & . J \ 27 4 8 = 5226 37206,554 
of Breitling, near the ^ 3 3 
pit, — — J 
Under cover of the 
mines, at the fame 
time, — — 
• 27 2 6=5222 37178,369 
Difference, — — 28,185 
Therm, in the pit -13, deduct therefore 732 
Deduft the elevation of the barometer 1 
above the entrance of the mines, 
~ J 
27,453 
416 
The height of the entry of the mines above') 
the gallery of Breitling, — — > 2 7 ,°j 7 
At 
P. L. i6deLig. Log. 
A midi i a l’enttee de la galelie de Breitling, 1 g _ 6 37206,554 
ipres du puits, — j / j jj 
Sous le convert des mines, a cette heure la — 27 2 6 = 5222 37178,369 
Difference, — — 28,185 
Thermometre dans le puits — 43 ; done -rife a deduire, — ,732 
27,453 
A deduire ce dont le barometre etoit plus haut que l’entree des mines, ,4.16 
•tfauteur de Fentree des mines, fur la galerie de Breitling, •«- 27,037 
A aj h. 
