20. To Express Results in Grains per Gallon. If it is desired to express the results in grains per gallon, the following table will be found useful: TABLE IV. FOR THE CONVERSION OF PARTS PER 100,000 INTO GRAINS PER GALLON. Parts per Grains per Parts per Grains per Parts per Grains per 1.4 49 34.3 96 67.2 2.1 50 35.0 97 67.9 2:8 51 35.7 98 68.6 3.5 CALCU ALCULATION of maximum dis- of sewage flow from chlorine, 15 Cameron's septic tank, 88 Candy tank, 80-82 Catchwater system, 54 Chemical analysis of sewage, 191 Chemicals chiefly used as precipitants, Chemistry of sewage, 10 hourly variations in, 30 Cholera, vitality of bacillus of, in water, Circular filters, data with regard to, 189 Clay, burnt, filters of, 111 lands, irrigation of, 54 method of irrigating, 54 report of Sewage Commis- Farms, method of laying out, 60 references to, Berlin, 27, 28, 55, 63, 64 Birmingham, 55, 60 Edinburgh, 62 |