FA1RLEV : BLOWING WELLS. 
409 
ON THE BLOWING WELLS NEAR NORTHALLERTON. BY T 
FAIRLEY, F.R.S.E. 
The wells are three in number. 
Well at Solberge, 3 J miles southward from Northallerton. 
Well at Langton, about 4 miles W.N.W. of Northallerton. 
Well at Ornhams, about 2 miles southwards from Borough- 
bridge. 
They are called blowing wells because in each of them currents 
of air flow from the shafts of the wells during a falling period of 
the barometer, and inward currents flow into the shafts of the 
wells while the barometer is rising. When the rise or fall of the 
barometer is considerable, the currents are very powerful, pro- 
ducing a strong draught or wind in the openings leading to the 
shaft. 
Through the kindness and assistance of Mr. Hutton, the 
proprietor of the estate at Solberge, I have been able to make a 
number of experiments at the well near the house at Solberge. 
In the first instance I analyzed the water from the well taken 
by Mr. Hutton, on the 12th of June, 1879. 
The water contains in grains per gallon : — 
™ i • i ■ ^ c ij. * i } containing 
Chlorides, consisting of common salt .. 4-1 r chi orme 2-49 
Sulphate of Lime 6 36 
Carbonate of Lime 16*24 
Carbonate of Magnesia ... ... . . . 1 1 '36 
Oxide of Iron and Alumina ... ... 0-03 
Silica 0*21 
(1) Organic Matter, &c. ... 0-34 (by difference) 
Total Solids by evaporation... 3864 
(1) Containing Ammonia none 
Containing Organic Ammonia ... ... 0-0014 
Colour of the water in 2 foot tube, very slight green tint. 
Hardness of the water before boiling, 32°-6; after, 8°-4, 
giving temporary hardness 24°-2 ; permanent 8°-4 ; total 32°*6. 
The analysis shows that it is a water having a composition 
similar to those coming from chalk or limestone strata. 
