147

H.—3l

samples (six) and the Dunedin samples taken by the police (twenty-four) probably represent the quality with which the public ought to be supplied. (c.) Taking the whole of the fifty-one samples analysed here for the year, the average composition comes out very satisfactorily—namely, 13"17 per cent, of total solids, 362 per cent, of butterfat, 955 per cent, of solids other than fat. I think 3-25 per cent, of butter-fat ought to be the minimum insisted on from sound healthy cows and proper feed, and let all milk-vendors work up to this standard. I have, &c, James G. Black, The Chief Health Officer, Wellington. Government; Analyst.

Return of Analyses for the Year ended 31st March, 1908. (Analytical Laboratory, Dunedin.)

Department or Person from whom Sample received. Nature of Sample. Date received. Adulteration suspected, or for what analysed. Kesult. Police, Gore .. Hop-beer 1907. April 4 Alcoholic strength 1*5 per cent, of alcohol by weight. Not intoxicating. No. 1 : Mineral matter, 32 gr. per gallon ; organic matter, 1-4 gr. ; by De Chaumont's test, good. No. Iα : Mfneral matter, 31 gr. per gallon"; organic matter, 1*3 gr. ; by De Chaumont's test, good. No. 2 : Mineral matter, 20 gr. per gallon; organic matter, 1-5 gr. ; by De Chaumont's test, good. i No. 2a : Mineral matter, 21-3 gr. per gallon ; organic matter, 1-7 gr. ; by De Chaumont's test, good. No. 3 : Mineral matter, 14-6 gr. per gallon; organic matter, 7-8 gr. ; ammonia, some; nitrogenous matter, trace; by De Chaumont's test, bad. Mineral matter, 19-3 gr. per gallon; organic matter, 0-7 gr. ; by De Chaumont test, 0-9 gr., good. Mineral matter, 19-1 gr. per gallon;' organic matter, 0-6 gr. ; by De Chaumont test, 0-9 gr., good. Mineral matter, 19-2 gr. per gallon; organic matter, 0-7 gr. ; by De Chaumont's test, 0-8 gr., good. Mineral matter, 166 gr. per gallon ; chlorides, 1-2 gr. ; De Chaumont's in app. for iron. Health Department Water from Gore March 26 Impurities Ditto „ 26 „ 26 ,. 26 ,'. 26 Public Health, Gore Water before pumping » 26 Ditto Water after seven hours' pumping „ 26 Ditto Water, reticulated supply „ 26 Public Health, Invercargill Water from household tap April 7 Police, Dunedin Milk .. Total Solids. Fat, J^ Per Cent. Per Cent. Per Cent. 13-9 41 9-8\ May 18 Adulteration, percentage of fat, purity, &c. Ditto >> June 18 18 18 18 18 18 18 18 18 18 •22 22 22 22 22 22 22 22 22 22 22 22 22 8 14-3 4-7 9-6 14-9 4-9 100 Good; genuine 14-1 4-5 ' 9 6( quality. 14-4 4-7 9-7 14-4 4-8 9-6 131 3-8 9-3 14-4 4-5 9-9 12-1 2-8 9-3 Deficient in fat. 141 4-6 9-51 „ , 14-2 4-5 9.7,- Good. 13-7 3-7 100 131 3-3 9-8 12-7 2-46 10-24 Deficient in fat. 14-0\ co (4-1 9-9 13-9 [ g 4-0 9-9 14-9 f o 4-5 10-4 13-lj 3; (3-8 9-3 13-5 40 9-5 130 30 100 141 4-2 9-9 12-2 2-91 2-29 131 3-8 9-3 140 4-3 9-7 12-4 2-7 9-7 >> V Public Health, Dairy Industries Ditto ',', A '.'. 8 8 13-8 3-9 9-9 9-3 2-4 6-9 Fat deficient; water added. >> 8 8 8 12-7 30 9-7 11-3 2-3 9-0 Fat deficient. 11-5 2-4 91