in the Mines of the Hartz. 
503 
Calculation of the Depth of the George Gallery. 
Barometer at the gallery, 27.4219 — 5265 ( 1 gads of an inch) Log. 37213984 
At the entr. of the mine, 26.6250=5112 
Heat of the air at the gallery. 
At the entrance of the mine, 
37085908 
Difference 128076 
i7 
■ 6| 
_ 2 ,i - m 
IOOO 
to deduct 
looodths of a French fathom, 
<rV to add, 
Lachters 
2977 
125099 
2051 
127. 150 
Calculation 
Calcul de la profondeur de la Galerie George. 
Bar. a la Gal. - 27.5.1 = 5265 (i6 mes de lig.) Log. 37213984 
A l’entree de la mine, 26.7.8 =5112 37085908 
Chaleur de fair a la Gal 
A la entree de la mine. 
-17 
- 6i 
Difference 128076 
-231 = a aeduire 2977 
iooo me de toife de France, 
zt a ajouter, - 
125099 
2051 
Lachters 127,150 
U u u % 
Calcul 
