Py 
84 TRANS. OF THE ACAD. OF SCIENCE. 
teresting to know accurately the elevation, above St. Louis, of the 
ures of this sandstone; but at present I am able to give that 
of only one, which is a little east of Franklin, where the junction 
of the ]st Magnesian a with the Saccharoid Sandstone 
is 100 feet above St. Lou 
The ratio of the increase of the Earth’s remap ogy we 
descend, deduced from the data furnished by the Artesian 
Well at St. Louis, does not agree with that saad from obser- 
vations made at other Artesian Wells. The water, as it flows 
from the well at the Refinery, has a constant temperature, we 
Taking the depth, from which the water at the well comes, to be 
: 1515 feet, this would give an increase of 1° F. for every 83.3 feet 
of descent, and for an increase of 1° C. a descent of a1. 8 feet; 
but for an increase of 1° C. requires, according to the obse 
tions at 
sla Grenelle, a descent of 104.6 feet; 
Monsdorf, 
: GRE Mis cet 
Pregny, near Geneva, 97.3 ee 
The water of the Artesian Well is now conveyed through s a 
‘hymen noonestng pipe, conducted ane 
d barrels, to their dwellings, a 
_ Analysis of the Water. 
