ON THE CIRCULATION OF UNDERGROUND WATERS. 155 
The specific gravity of the water (1:0060) is very great. The water is quite clear and 
limpid to the eye, and has a brackish taste, but contains not the slightest organic 
impurity. By continuous pumping for some weeks the solids in solution have been 
reduced from 650 (parts in 100,000 parts) to 465, and it is fully expected that further 
pumping will greatly reduce this quantity. 9. See Report for 1882 for description 
of rocks down to 705 feet 2 inches. 
Depth of rocks Total depth 
ft. in. ftaurdans 
Mottled sandstone, red and grey ; . . 12 6 ° TAT 8 
Red sandstone, coarse F A = co te 10 ‘ 725 6 
Grey sandstone . - : : - : ~ Loaid : 740 6 
ere la ae of } 7 6 ! 748 0 
Red sandstone, fine-grained ; . : <6) 10 ‘ 754 0 
9a. From sandstone rocks only. 10 to 16. For replies to these questions see former 
Reports. 
Information collected by Mr. De Rance, from the Cromer Waterworks 
Company, Limited. 
Analysis of Water. 
County Analyst’s Office and Laboratory, London Street, Norwich, 
November 11, 1880. 
Grains per gallon 
Total dissolved solids . “ . 3 : : 5 . 21:2800 
Free ammonia : ‘ : : “ ‘ : 5 0056 
Ammonia from organic matter . : - : c 0028 
Nitrogen as nitrates or nitrites. : : 4 : none 
Chlorine. : 5 : 5 3 é Z ‘ »  2°2400 
Equal to common salt . ; ‘ < : : - 37100 
ame) 7. . - a - - - 5 ; .  7:2800 
Magnesia 4 c : - - : ° > . “6050 
Sulphuric anhydrid : : : : - : .  1:4400 
Equal to gypsum . ci - 5 : ‘ A -  2-4500 
Oxygen required to oxidise organic matters . : - ‘0760 
Natural hardness. : A : 4 s 15 degrees 
Hardness after boiling . . - ‘ ‘ SED! sy 
Remarks.—This water is undoubtedly to be ranked as a water of high-class purity, 
and in all respects is admirably adapted for dietetic purposes. The organic impurity 
is practically m7, and the mere trace which is found to be present is unquestionably 
mainly derived from vegetable sources of a perfectly harmless description. The 
hardness is also very moderate, and well within the limits which have been practi- 
cally found conducive to health; at the same time it is quite sufficient to prevent 
any absorption of lead from metal pipes. By simple boiling the hardness is reduced 
to one-fourth of its original amount. I consider it an admirable water, both for 
domestic and general purposes. 
(Signed) Francis Sutton. 
Mr, G. H. Ogston, of 22 Mincing Lane, London, in his Report of January 11, 
1881, after confirming the above analysis, goes on to say :— 
‘The sample sent me from the Cromer Reservoir has been analysed. It is clear 
and bright, and has a good appearance in addition to a brisk and agreeable taste. 
Ry The analysis indicates that it is free entirely from pollution, and in my opinion 
it is an excellent water for drinking and for general use.’ 
Information collected by Braintree and Bocking Microscopical and 
Natural History Club. 
1. Belonging to Messrs. S. Courtauld & Co., situate at Bocking Church Street, 
Essex. la. July, 1865. No. 2. 137:07 feet. 3.40 feet deep, 5 feet diameter; 
244 feet deep, 8 inches diameter. 3a. None. &. No pumping required. a. When 
first sunk it stood about 8 feet above surface of ground. Not ascertained. 5. Capa- 
