93

H.—3l

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

A. A. Bickerton, Colonial Analyst.

Otago. g IB) University Laboratory, Dunedin, 22nd May, 1906. I have the honour to forward herewith my return of analyses for the Department of Public Health for the year ending the 31st March last. I have no remarks to offer on the year's'work in this laboratory except to say that the quality of the milk has improved all round since the standard of butter-fat was raised to 3 per cent. I have, &c, Jambs G. Black, Analyst to Public Health Department, The Chief Officer, Department of Public Health. 13— H. 31.

Department or Person from i 13fl te received. whom Sample received. Nature of Sample. Adulteration suspected, or for -wliat analysed. Result of Analysis. nspeotor of Weights and Measures, Kaikoura 1906. Mar. 12 Ale, Marlborough Brewery Purity Original gravity, 1-062 ; specific gravity, 1-0056. Alcohol, 5-51 per cent.; extract, 3-62 per cent. ; ash, 0-28 per cent ; acid, 0-16 per oent. ; sulphates, 0-04 per cent. ; sulphites, traoe; poisonous metals, nil. )itto ., 12 Ale, Ward and Co. H Original gravity, 10528; specific gravity, 1-0058. Alcohol, 5-07 per cent.; extract, 3-6 per cent.; ash, 0-42 per oent. ; aoid (laotio), 0-12 per oent. ; sulphates (lime), 0-08 per oent. ; sulphites, trace ; poisonous metals, nil. Aoetic acid, 29-25 per cent. 'ustoma . 21 Acetic acid Tariff lealth „ 20 Water, eervioe-pipes Purity Organic and volatile matter, 2-52 gr. ; sodium-chloride, 4-94 gr. ; sodiumBulphites, 0-64 gr.; carbonate of lime, 252 gr. ; silicates, 1-12 gr. ; nitrates, bare trace; free ammonia, 0-004 gr.; albuminoid ammonia, trace. • 20 Water, service-pipes, Lyttelton Organic and volatile matter, 2-66 gr. ; sodium-chloride, 4'94 gr. ; sodiumsulphates, 0-69 gr.; carbonate of lime, 2-52 gr.; silicates, 110 gr.; nitrates, bare trace; free ammonia, 0004gr. ; albuminoid ammonia, trace. 20 Ditto Organic and volatile matter, 252 gr.; sodium-chloride, 4-94 gr.; sodiumsulphates, 07 gr.; carbonate of lime, 2-52 gr. ; silicates, 1-12 gr.; nitrates, faint traoe ; free ammonia, 0-004 gr.; albuminoid ammonia, trace. 20 „ . • • • li Organic and volatile matter, 3-08 gr.; sodium-chloride, 4-94 gr.; sodiumsulphates, 069 gr.; carbonate of lime, 2-52 gr.; silicates, 1-14 gr. ; nitrates, bare trace ; free ammonia, 0-004 gr. ; albuminoid ammonia, trace. ngineor of Pumpingstation, Lyttelton waterworks 22 Organic and volatile matter, 084 gr. ; sodium-chloride, 1-48gr; carbonate of lime, 2-44 gr. ; silicates, 1-12 gr. ; iron, trace ; sulphates, traoe; free ammonia, 0-024 gr.; albuminoid ammonia, 0-01 gr. This is a very good water, and as it contains very little mineral matter, as much water as possible should be obtained from this source, so as to reduce the amount of salt in the total watersupply.