228 EEPORT — 1882. 



gradually in a dry season 3 or i inches a week. As the springs break in the neigh- 

 tourhood the water rises rapidly. There does not appear to be any material change 

 in the normal level of the water. 5. The quantity of water pumped from 1,500,000 

 to 3,.500,000 gallons per diem. 6. Ai^art from the continuous pumping for the 

 supply of the summit-level of the Thames and Severn Canal the water-level is 

 determined by that in the gravel in the bed of the adjoining valley, and rises and 

 falls with it. No perceptible diminution during the last 30 j'ears. 7. Not affected 

 except by long-continued rains in the Cotteswold District on the N.W. 9. Section 

 sent herewith. 9a. In the basement beds of the Great Oolite. lO. See section. 

 11. See section. 12. No. 13. No. 14. No. 



Appendix III. — Jurassic Wells. 



Collected by Mr. C. Eox Strangways. 



From Lieut.- Col. W. F. Walker, R.E., York. 



1. Towthorpe Common, near York. Xa. January to April 1870. No. 2. 60 feet. 

 3. The well consisted of a bore-hole 9 inches in diameter and 311 feet -1 inches deep. 

 This was subsequently plugged, leaving the present depth 210 feet. 3<7,. None. 

 4 and 4a. Enquiry will be made on these points. 5. Not tested. After 72 hours 

 continuous pumping no diminution in supplj' was perceptible. 6, Little or no 

 variation is observed in the shallow wells of the locality. Experiment not tried in 

 deep boring. 7. Only temporarilij affected. Ordinarily stands \h feet above the 

 level of the water in the I^ors, the nearest river, a. Two copies of the results of the 

 analysis of this water are attached, that marked No. 1 being the result of the first 

 analysis, and that marked No. 2 being the result of the analysis after plugging for 

 about 100 feet had been resorted to. 



Analysis No. I. 



From Towthorpe, York. I Drawn December 20, 1879. 



Source, Artesian well, 311 ft. 4 in. deep. | Eeceived December 26, 1879. 



Physical Characters. 



Colour (through 36 in.) . Faintly yellow. | Lustre ...... Fair. 



Turbidity . . . None. ' Taste 



Sediment . . . Present. Smell None. 



Hardness. 



Fixed 66°-50 



Temporary or removable 26°-25 



Total .... 92°-75 



Quantitative Chemical Analysis. 



Parts per 1.000,000 



Oxygen required for oxidisable organic matter . 0'5600 



Ammonia, free 0-4940 



Ammonia, albuminoid ...... None. 



Nitric acid (NO3) 0-2297 



Nitrous Acid (NO,^) None. 



Total nitrogen included in nitrates and nitrites . 00519 



Grains per Gallon 



Volatile organic matter 0-4357 



Ammonium nitrate 0-1517 



Sodium nitrate 0*1566 



Sodium chloride 2-5689 



Sodium carbonate 5-0000 



Calcium carbonate 14-8000 



Calcium sulphate ... . . 77-9800 



