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 25
... passed , since certain ingredients ( in de- fault of such a source ) are indicative of organic pollu- tion ; unfortunately this is by far the most difficult in- formation to obtain in a reliable form . Comparatively , all other ...
... passed , since certain ingredients ( in de- fault of such a source ) are indicative of organic pollu- tion ; unfortunately this is by far the most difficult in- formation to obtain in a reliable form . Comparatively , all other ...
Page 48
... - comes an element in the calculation , but if ooo then it may be passed as organically pure despite much free ammonia and chlorides . Free ammonia being very small , a water should not be condemned unless the 48 LABORATORY WORK .
... - comes an element in the calculation , but if ooo then it may be passed as organically pure despite much free ammonia and chlorides . Free ammonia being very small , a water should not be condemned unless the 48 LABORATORY WORK .
Page 69
... — as in some cases - oxygen ) have all passed over and been collected over the mercurial trough ; after which they are mea- sured volumetrically . III . It becomes necessary to remove the sulphurous acid FRANKLAND'S PROCESS . 69.
... — as in some cases - oxygen ) have all passed over and been collected over the mercurial trough ; after which they are mea- sured volumetrically . III . It becomes necessary to remove the sulphurous acid FRANKLAND'S PROCESS . 69.
Page 107
... passed , or from the sul- phur contained in organic pollution ( urine , & c . ) . Even the rain water collected in large towns yields small amounts by taking up the sulphurous acid from the smoky atmosphere . Sulphates sometimes result ...
... passed , or from the sul- phur contained in organic pollution ( urine , & c . ) . Even the rain water collected in large towns yields small amounts by taking up the sulphurous acid from the smoky atmosphere . Sulphates sometimes result ...
Page 132
... passing on to the inch power , and then prosecuting the examination further by means of the inch oil immer- 2 7 FIG . 28. - Showing the sediment of a pond - water , a sample of which was collected in the early spring ( X 250 ) . Drawn ...
... passing on to the inch power , and then prosecuting the examination further by means of the inch oil immer- 2 7 FIG . 28. - Showing the sediment of a pond - water , a sample of which was collected in the early spring ( X 250 ) . Drawn ...
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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.