C. M. Wetherill on the Artesian Well of Lafayette, Ia. 245 
i (eb, 18 ture, noted at intervals since the water was first 
sind ns b. 18th e4 December 8th,) remained constantly be- 
6° F., my thermometer not being sufficiently 
delicate > mre more definite results, 
Although the mean temperature of Lafayette is unknown,* I 
' have no doubt from other considerations, that the artesian water 
is “thermal ;” for, fi rst, the calculated temperature of the water 
its temperature is above that: of the nelghdbetrings springs and 
Wells, as may be seen from the following table, which contains 
wells and springs situated at different points of the compass from 
the artesian well, and within a circle of two squares radius. 
Temperature of the Wells and Springs of Lafayette, taken “te 30, 1858. 
7S ida tat 
pth.| Directionfrom 3 
LOCALITY, - Feet, | Artesian wins Air. Water. 
Mr. C. Taylor's dwe 25 |South “78° F 151° F. 
Courthouse ‘ is Sid _ | 16 [Southeast | “ nas 
Wilstach’s ve Orie Store, 16 |North 3 a 
6q from Artes, Well, No “ ae 
Mr. Benbridges’ dwelling, 20. [Southeast (80° |49° 
Messrs. Taylor & Co., lumber yard, b ; vee 
Well Cellar of Mr, J. Mix’s store, 16 | West ve pe 
Artesian w'l], 8 Hotel, 80° |55-56° 
Chemical l Characters, itative-—The water is faintly acid 
_ I aphuretted igacen 8 and carbonic acid, but becomes 
cular experiment = the search of a trace 0 
ioe gave the same res esults. 
* The me mnie en 
SECOND SERIES, Vor. a tmp 80, 
32 
