---------+----------+--------------------------+------------------------- |Available |Number of Gallons obtained|Pounds of Powder per 100 |Chlorine |from 112 lbs. of Powder. |gallons of Liquor. Twaddell.|Pounds +------------+-------------+------------+------------ |per 100 |34 per cent.|35 per cent. |34 per cent.|35 per cent. |gallons. | Powder. | Powder. | Powder. | Powder. ---------+----------+------------+-------------+------------+------------ 0·25 | 0·70 | 5,464 | 5,600 | 2·05 | 2·00 0·50 | 1·40 | 2,725 | 2,800 | 4·11 | 4·00 1 | 2·71 | 1,405 | 1,445 | 7·97 | 7·74 2 | 5·58 | 681 | 702 | 16·41 | 15·94 3 | 8·48 | 448 | 462 | 24·95 | 24·23 4 | 11·41 | 334 | 340 | 33·55 | 32·60 5 | 14·47 | 264 | 270 | 42·58 | 41·34 6 | 17·36 | 219·5 | 225 | 51·06 | 49·60 7 | 20·44 | 186 | 191 | 60·11 | 58·40 8 | 23·75 | 160 | 165 | 69·85 | 67·85 9 | 26·62 | 141 | 147 | 78·30 | 76·57 10 | 29·60 | 129 | 132·5 | 87·06 | 84·54 11 | 32·68 | 116·5 | 120 | 96·11 | 93·37 12 | 35·81 | 106·5 | 109·5 | 105·32 | 102·31 13 | 39·10 | 98 | 100 | 115·00 | 111·70 14 | 42·31 | 90 | 92·5 | 124·45 | 120·90 15 | 45·70 | 84 | 86 | 134·41 | 130·56 16 | 48·96 | 78 | 80 | 143·80 | 139·71 17 | 52·27 | 73·5 | 75 | 153·53 | 149·34 18 | 55·18 | 69 | 71 | 162·30 | 157·65 19 | 58·40 | 65·5 | 67 | 171·00 | 166·86 20 | 61·50 | 61·5 | 64 | 180·88 | 175·71 ---------+----------+------------+-------------+------------+------------ The best method for extracting powder is to agitate the material with water for a short period, and to stop the mixing process directly the maximum density has been obtained, which usually takes place in 15 minutes. Prolonged agitating prevents the powder from settling readily. The maximum quantities of liquor which can be obtained from bleaching powder are shown on page 162. The following table is useful as showing the amount of water required for diluting strong liquors, the figures being applicable to any solution independent of the nature of the dissolved substance. DILUTION TABLE FOR WEAK LIQUORS. Showing number of gallons of water required to reduce the density of 100 gallons of liquor from a higher density, D, to a lower density, _d_. (See page 157.)