H.—3l

70

Return of Analyses at the Analytical Laboratory, Christchurch —continued.

Department or Person from whom Sample received. Date received. Nature of Sample. Adulteration suspected, or for what analysed. Result of Analysis. :ealth 1906. Aug. 23 Sewage, raw, from Jackson's Creek Parity Parts per 100,000: Total solids, 22; sodium-chloride, 22 ; ammonia, 0-5 ; nitrates, trace ; oxygen, nil. Grains per gallon : Loss on ignition, 1"12 ; sodium-chloride, 0'8 ; oarb. of lime, 0-64 ; sulphates, 04 ; silicates, 0-28. Parts per million : Free ammonia, 0-016; album, ammonia, 0006; oxygen absorbed in 4 hours, 0-02. Gr. per gallon : Loss on ignition, 196 ; sodium-chloride, 08 ; carb. of lime, 0-69 ; sulphates, 0 ; silicates, 0-66. Parts per million : Free ammonia, 0-06 ; album, ammonia, 0-06 ; oxygen absorbed in 4 hours, 0*06. Parts per 100,000: Total solids, 7; sodium - chloride, 0'7 ; ammonia, 0-024 ; nitrates, trace ; oxygen, nil. Parts per 100,000: Total solids, 7; sodium - chloride, 07 ; ammonia, 0024 ; nitrates, trace ; oxygen, 0-03. Parts per 100,000: Total solids, 22; sodium-chloride, 56; ammonia, 0-4; nitrates, nil. Oxygen, 2-6. Total solids, 5-07 gr. per gallon. 23 Water from intakerace QQ Water from servioepipes u • • 23 Water from River Avon, above Hospital Water from River Avon, Stanmore Bridge Sewage, raw, from Jackson's Creek H 23 Sept. 3 7 Water, reservoir at Timaru Water service, Timaru Glacial acetio acid .. Acetic acid Water from reservoir side of screen, Timaru For solids.. 7 * • • 4-76 lustoms . 12 . 18 , 18 Tariff 98 per cent, acetic acid. Not glacial. 56-1 Gr. per gall.: Loss on ignition, 1-4 ; sodium-chloride, l - 25; oal. carb., 2'48; silicates, 0"42 ; sulphates, trace. Parts per million : Free ammonia, 0 004; album, ammonia, 0-005 ; oxygen absorbed, nil. Loss on ignition, 182; sodium-chloride, 1 4 15 ; sodium carb., 2-96; silicates, 056; sulphates, trace; free ammonia, 0-004; album, ammonia, 0005 ; oxygen absorbed, nil. Loss on ignition, 202; sodium-ohloride, 1-03 ; oal. oarb., 2-4 ; silicates, 0-42 ; sulphates, trace; free ammonia, 0 004 ; album, ammonia, 0-005 ; oxygen, nil. Loss on ignition, 1-26; sodium-chloride, 1-1; cal. oarb., 2-26 ; silioates, 0-56; sulphates, trace ; free ammonia, 0004 ; album, ammonia, 0005 ; oxygen, nil. Loss on ignition, 1-6; sodium-ohloride, 1-1; cal. oarb., 2-4 ; silicates, 0-56 ; sulphates, trace; free ammonia, 0-004 ; album, ammonia, 0-005 ; oxygen, nil. Loss on ignition, 3-52; sodium-chloride, 0-69; cal.oarb., 1-96; silicates, 0-84 ; sulphates, trace; free ammonia, 0-02; album, ammonia, 0-1; oxygen, 6-7. Loss on ignition, 0-84; sodium-chloride, 0-69 ; oal. oarb., 1-24 ; silicates, 014 ; sulphates, trace ; free ammonia, 0-003 ; album, ammonia, 0-003 ; oxygen, nil. Loss on ignition, 084; sodium-chloride, 0-92 ; oal. carb. 0-62 ; silicates, 0-42 ; sulphates, trace; free ammonia, 0-008; album, ammonia, trace ; oxygen, nil. Same as above. lealth Purity Water from well on town side of soreen, Timaru Water from raoe, Timaru Water from east end reservoir, Timaru Sept. 14 • • Water from houseservice, Timaru w • • u „ 14 Water from Burnham, before entering settling-tank * * • , U Water from servioe.. H ' • „ 21 Water from tap, Dr. Crawshaw's house » • • . 21 Water from tap, Mr. Buxton's, at Tβtnuka Water from well at railway-station, Temuka Water from well, reservoir side of soreen, Timaru Water from well on town side of screen, Timaru W • • , 21 , Exceptionally good water. n , 28 Total solids Grains per gall.: Loss on ignition, 2-24 ; total solids, 7; mineral matter, 4-76. Gr. per gall.: Loss on ignition, 2-78 ; total solids, 7-26; mineral matter, 4-46. . 28