ON THE CIRCULATION OF UNDERGROUND WATERS. 393 



and maintains its level notwithstanding the continuous pumping carried 

 in the adjoining old well, the water level of which is 50 feet lower. 



1. Dallam Lane Forge, WarriDgton. 2. About 45 ft. above 0. D. 3. Total 

 depth of well and bore-hole, 887 ft. 5. Yields 100 gallons per minute with 20-in. 

 vacuum. 



8. At 237 ft. from surface 40 grains of salts per gallon. 



345 „ 170 „ 



390 „ 300 „ 



445 „ 750 „ 



500 „ 1246 „ 



600 „ 1575 „ 



680 „ 3100 „ 



756 „ 4000 „ 



818 „ 4500 „ 



These figures represent number of grains per gallon produced by nitrate of silver, 

 i.e., chlorides alone. Water has a strong briny taste. 



Feet. 



9. Drift, chiefly B.C., about 30 



Red and pale yellow rock, soft 350 



Red and white ditto, with thicker sides 2 



Micaceous sandstone 3 



Pale red and yellow ditto, with a bed of weak red 



marl 57 



Red sandstone, with white bands and 2 ft. of marl 190 



602 



Name of Member of Committee asking for information, Professor 

 Hull. 



Name of Individual or Company applied to — 



Messrs. Worrall. 

 1. Dyework, Old Garrat. 3. 109 yards. 5. 384,480. 9. New Red sandstone. 



Mr. Boddington.. 

 1. Brewery, Strangways. 5. 55,840. 9. New Red sandstone. 



Messrs. Bury's Dyeworks. 



1. Salford. 3. "Wells and bore-hole 100 yards. 5. 353,240 gallons, and 

 66,240 at Messrs. Moseley's Dyeworks, a quarter of a mile off ; an engine pumps 

 1,500,000 gallons per day. 



Mr. Charlton. 



1. Charlton's Work, Salford; 150 yards from Boddington's Brewery. 3. 70 ft. 

 with bore-holes. 5. 348,000 in 16 hours. 



1. Mr. Smith's (late Joule's) Brewery, Salford. 3. 206 yards, with chamber in 

 New Red sandstone. 5. Two pumps can be kept at work for forty-eight hours, 

 yielding 137,000 gallons. 7. Water-level is that of river Irwell. 



Yards. 



9. New Red sandstone, about 156 



Marls with limestone 40 



Rock and clay alternating with hard sandstone 



with water 10 



