Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributedBlakiston, 1893 - 491 pages |
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Page 31
... remains after this procedure to resort to the plan of heating the water- except it be in those cases where there is strong reason for considering that odoriferous gases may be present in small quantities inappreciable except by heat ...
... remains after this procedure to resort to the plan of heating the water- except it be in those cases where there is strong reason for considering that odoriferous gases may be present in small quantities inappreciable except by heat ...
Page 36
... remains as an auxiliary test for organic matter to this day . The facts , however , that potassium permanganate in solution is so very unstable , that it will part with its oxygen more readily to the least dangerous ( i.e. , vegetable ) ...
... remains as an auxiliary test for organic matter to this day . The facts , however , that potassium permanganate in solution is so very unstable , that it will part with its oxygen more readily to the least dangerous ( i.e. , vegetable ) ...
Page 42
... remains behind in the flask , all then collected will be " ammonia - free . " THE PROCESS . Firstly the amount of " free and saline ammonia " is calculated ; the latter term including that which exists in solution in the water , in ...
... remains behind in the flask , all then collected will be " ammonia - free . " THE PROCESS . Firstly the amount of " free and saline ammonia " is calculated ; the latter term including that which exists in solution in the water , in ...
Page 54
... iodide of potassium saturated with mercury periodide , and it remains to render it sufficiently alka- line and to render it sensitive . This is accomplished by adding 160 grammes of solid caustic potash , or 54 LABORATORY WORK .
... iodide of potassium saturated with mercury periodide , and it remains to render it sufficiently alka- line and to render it sensitive . This is accomplished by adding 160 grammes of solid caustic potash , or 54 LABORATORY WORK .
Page 60
... remains for analysts to agree upon the terms in which the results shall be invariably ex- pressed and the period of time for which each test shall be applied . The temperature has been proved by experiment to be a more important factor ...
... remains for analysts to agree upon the terms in which the results shall be invariably ex- pressed and the period of time for which each test shall be applied . The temperature has been proved by experiment to be a more important factor ...
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Common terms and phrases
acetic added adulteration alcohol alkaline alum ammonia ammonium sulphide amount analysis animal apparatus appearance atmosphere blue boiling bottle burette butter c.c. of water calcium calcium carbonate carbonic acid cells cent chemical chlorine coal gas collected colour contain copper created cubic cubic centimetres detected dilute dissolved distilled water employed estimation evaporation flask flour gases gelatine grammes granules hydrochloric acid insoluble iron lime liquid liquor potassæ litre magnesium meat method micro-organisms milk milligramme mineral necessary Nessler glass nitrates and nitrites nitrogen nitrous acid odour organic matter oxide oxidised oxygen permanganate placed platinum dish poisonous metals pollution potassium precipitate present pure quantities reaction reagent residue salts sample sediment silica silver nitrate smell sodium carbonate soil soluble specific gravity standard solution starch sterilised substance sugar sulphate sulphuretted hydrogen sulphuric acid temperature tion total solids tube vapour vegetable washed weight yellow zinc
Popular passages
Page 417 - ... that he had no reason to believe at the time when he sold it that the article was otherwise, and that he sold it in the same state as when he purchased it, he shull be discharged from the prosecution, but shall be liable to pay the costs incurred by the prosecutor, unless he shall have given due notice to him that he will rely on the above defence.
Page 341 - ... diseased, or unsound, or unwholesome, or unfit for the food of man, he may seize and carry away the same himself or by an assistant, in order to have the same dealt with by a justice.
Page 495 - The Diseases of Women. Including Diseases of the Bladder and Urethra. By DR. F. WINCKEL, Professor of Gynaecology and Director of the Royal University Clinic for Women, in Munich.
Page 495 - English Edition, revised and improved. 758 pages. This volume was specially prepared to furnish students with a new text-book of Physiology, elementary so far as to avoid theories which have not borne the test of time and such details of methods as are unnecessary for students in our medical colleges.