Pamphlets: Water Analysis1848 |
Términos y frases comunes
albuminoid albuminoid ammonia ammonia amount analysis Aqueduct average Board of Health Bogue Falaya C. F. Chandler carbonate of lime carbonic acid cent chemical chemists chloride cholera cistern colored condition cost Croton River Croton water deaths deposit disease distributing reservoir Engineer estimate evaporation examination filtered filtration flow Free Ammonia furnish Genesee River grains per gallon hard water Hemlock Lake Hydrant impurities inches Inorganic iron Jersey City Kansas river Lake Ontario lead London Lorette magnesia miles mineral Mississippi Mississippi River Newark nitrates obtained Organic and volatile organic matter Orleans oxide oxygen Passaic Passaic River pipe pollution population portion present Prof pumping pure water purity purposes quantity Quebec rain render Reservoir river water rock salts samples sanitary sediment sewage sewers Silica soda springs Station stream street substances sulphate of lime supply of water surface taken Thames tion Total Solids turbid water supply
Pasajes populares
Página 34 - Having carefully considered all the information we have been able to collect, we see no evidence to lead us to believe that the water now supplied by the Companies is not generally good and wholesome.
Página 25 - ... more speedily and more effectually. The effect of the action of oxygen on these organic matters, when complete, is to break them up, to destroy all their peculiar organic constitution, and to re-arrange their elements into permanent inorganic forms, innocuous and free from any deleterious quality. This purifying process is not a mere theoretical speculation. We have abundant practical evidence of its real action in the Thames and other rivers.
Página 89 - ... long periods of time be considered. Annual amount transported to the gulf. If this be so, and if the mean annual discharge of the Mississippi be correctly assumed at 19,500,000,000,000 cubic feet, it follows that 812,500,000,000 pounds of sedimentary matter, constituting one square mile of deposit 241 feet in depth, are yearly transported in a state of suspension into the gulf.
Página 82 - The means of preventing them are as much under the power of human reason and industry as the means of preventing the evils of lightning and common fire. I am so satisfied of the truth of this opinion that I look for the time when our courts of law shall punish cities and villages for...
Página 90 - ... or 11.3636 times the quantity which is discharged by the river. There can be but two ways by which this immense quantity of water can make its escape from the valley ; one is by the course of the river, and the other by evaporation. Hence, we perceive that there is but one relative portion of this quantity passing off by the river, for every lOf parts which are exhaled into the atmosphere, or 98!
Página 25 - But though for these reasons we believe that the organic contamination of the Thames is much less than is commonly imagined, still it would be sufficient to do great mischief were it not for a most beneficial provision of nature for effecting spontaneously the purification of the streams. Some of the noxious matter is removed by fish and other animal life, and a further quantity is absorbed by the growth of aquatic vegetation; but, in addition to these obstructions, important changes are effected...
Página 91 - Assuming that the diminution of the waters will continue in somewhat the same ratio they have recently done, the time cannot be very far distant when all apprehension from inundation will have in a great measure passed away. We will further remark, as an evidence of change,, that the quantity of floating timber or driftwood passing annually down the river, has diminished in a far greater ratio than that of the water...
Página 83 - During the visitation of 1848-9, this pump killed 500 persons in a single week, by disseminating cholera. The wealthy people of the West end went to Brompton, a fashionable summer resort, about five miles up the Thames, and soon the cholera broke out among them there. The health officers soon discovered, on investigation, that these people had been in the habit of sending to the Broad street pump for tea-water, and had brought the cholera with it.
Página 34 - Commission, who considered it soberly, and who said, with their customary fairness — •These opinions have been advanced by many eminent men of science ; they are worthy of respectful attention, and ought to operate as a constant stimulus to the most searching examination of the state of the water ; to the improvement of the modes and means of scientific analysis ; and to the diligent collection of medical data as to the effect of the waters on the public health. But we cannot admit them as sufficiently...
Página 8 - The rule, therefore, appears to be firmly established, and upon very satisfactory grounds, that where the crime is committed by a person absent from the country in which the act is done, through the means of a merely material agency or by a sentient agent who is innocent, in such cases the offender is punishable where the act is done. The law implies a constructive presence from the necessity of the case ; otherwise the anomaly would exist of a crime, but no responsible criminal.