 | Perry Fairfax Nursey - 1843 - 678 pages
...regarded as measuring with sufficient exactness the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...proportion of carbonic acid gas should not exceed a fivehundreth part, though it may extend without inconvience to a two-hundreth part. If a room twelve... | |
 | 1844 - 950 pages
...regarded as measuring with sufficient exactness the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...health ; that the proportion of carbonic acid gas had better not exceed a 500th part, though it may rise without inconvenience to a 200th part. If a... | |
 | Thomas Webster - 1845 - 598 pages
...as measuring, with sufficient exactness, the insalubrity of the air ; that, in the proportion of 1 part to 100 of air, ventilation is indispensable for...health ; that the proportion of carbonic acid gas had better not exceed a five-hun,i trill li part, though it may rise without inconvenience to a two-hundredth... | |
 | 1843 - 508 pages
...regarded as measuring with sufficient exactness the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...proportion of carbonic acid gas should not exceed a fivehundreth part, though it may extend without inconvience to a two-hundreth part. If a room twelve... | |
 | 1843 - 884 pages
...sufficient exactness, the insalubrity of the air ; that in the proportion of one part to a hundred of air, ventilation is indispensable for the prevention...health ; that the proportion of carbonic acid gas had better not exceed a five hundredth part, though it may rise without inconvenience, to a two-hundredth... | |
 | Robert Ellis (F.L.S.) - 1851 - 844 pages
...ignition, within a distance of one inch from any combustible material. [If a room, 12 feet square and 12 feet high, with the doors, windows, and fire-place closed, has a gas lamp burning in it, consuming Д cubic feet of gas per hour, the light wUl produce sufficient carbonic acid, in rather more than... | |
 | Thomas Webster, Mrs. William Parkes - 1852 - 1298 pages
...regarded as measuring, with sufficient exactness, the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...health ; that the proportion of carbonic acid gas had better not exceed a five-hundredth part, though it may rise without inconvenience to a two-hundredth... | |
 | Institution of Civil Engineers (Great Britain) - 1844 - 480 pages
...regarded as measuring with sufficient exactness the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...and twelve feet high, with the doors, windows, and * " Collection de Memoires relatifs a 1'assainissement des ateliers, des Edifices publics, et des habitations... | |
 | 1844 - 446 pages
...regarded as measuring with sufficient exactness the insalubrity of the air; that in the proportion of 1 part to 100 of air, ventilation is indispensable for...health ; that the proportion of carbonic acid gas had better not exceed a 500th part, though it may rise without inconvenience to a 200th part. If a... | |
 | Franklin Institute (Philadelphia, Pa.) - 1849 - 444 pages
...sufficient exactness, the insalubrity of the air ; that in the proportion of one part to a hundred of air, ventilation is indispensable for the prevention...health ; that the proportion of carbonic acid gas had better not exceed a five hundredth part, though it may rise without inconvenience, to a two-hundredth... | |
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Leblanc has recently analysed carefully the confined air of inhabited places, and concludes, as stated in his memoir, that the proportion of carbonic acid gas in such places may be regarded as measuring, with sufficient exactness, the insalubrity of the... 