The Principles of hygieneW.B. Saunders Company, 1914 - 525 pages |
From inside the book
Results 1-5 of 49
Page 37
... allowed for each additional atmosphere of pressure to make the change safely . The air - locks , where the change of pressure is made , should be at the top of the shaft , and not at the bottom , so that the men are not obliged to climb ...
... allowed for each additional atmosphere of pressure to make the change safely . The air - locks , where the change of pressure is made , should be at the top of the shaft , and not at the bottom , so that the men are not obliged to climb ...
Page 112
... allowed for drinking - purposes , either as plain water , or as tea , coffee , etc. For Ablution . The quantity used varies very much according to the cleanliness of the individual . About 25 liters may be allowed , of which 10 to 15 ...
... allowed for drinking - purposes , either as plain water , or as tea , coffee , etc. For Ablution . The quantity used varies very much according to the cleanliness of the individual . About 25 liters may be allowed , of which 10 to 15 ...
Page 123
... allowed to flow on to the surface of the filter bed . In this manner the depth of sand composing the filter diminishes slowly and the life of the filter is very much prolonged . After a filter has been cleaned the effluent is impure ...
... allowed to flow on to the surface of the filter bed . In this manner the depth of sand composing the filter diminishes slowly and the life of the filter is very much prolonged . After a filter has been cleaned the effluent is impure ...
Page 132
... allowed to fill the tank up to the water level X , but no higher , as it is restrained by the float - actuated valve shown in the tank . The small tank with the float and valve merely take the place of the inverted bottle and aĕrostatic ...
... allowed to fill the tank up to the water level X , but no higher , as it is restrained by the float - actuated valve shown in the tank . The small tank with the float and valve merely take the place of the inverted bottle and aĕrostatic ...
Page 134
... allowed for the action of the chlorin . The amount of calcium hypochlorite employed should be carefully regulated in accordance with the amount of organic matter in the water . Ex- cessive quantities of the disinfectant are to be ...
... allowed for the action of the chlorin . The amount of calcium hypochlorite employed should be carefully regulated in accordance with the amount of organic matter in the water . Ex- cessive quantities of the disinfectant are to be ...
Common terms and phrases
acid ammonia amount animal apparatus bacillus bacteria blood body calories carbolic acid carbon dioxid cause cent centimeters chemical chlorid cholera climate clothing contained cubic meters death-rate deaths diet digestion diphtheria disinfection dust effects employed especially filter filtration fleas formaldehyd frequently fresh air grams Gynecology heat hygienic immunity important impurities increased infection infectious diseases influence injurious inspection Isolation and disinfection kilograms locality malaria Marine-Hospital Service meat method milk mosquitoes nature necessary nitrogen Obstetrics obtained organic matter oxygen parasites passengers patient persons pipe plague poisonous polluted port prevent produced proteid Public Health purification quantity quarantine quarantine officer quarantine station rats regulations removed salts sanitary scarlet fever serum sewage small-pox soil solution steam substances sulphur dioxid supply surface tank temperature tion tuberculosis typhoid fever United vaccination vegetable ventilation vessel weight yellow fever
Popular passages
Page 457 - Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled.
Page 453 - An act granting additional quarantine powers and imposing additional duties upon the Marine Hospital Service...
Page 499 - Treasury, necessary to prevent the introduction of contagious or infectious disea-ses into the United States from foreign countries or into one State or Territory or the District of Columbia...