Good Neighbors a Study in Vocational And Community Hygiene
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In our eReader you can find the full English version of the book. Read Good Neighbors a Study in Vocational And Community Hygiene Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Good Neighbors a Study in Vocational And Community Hygiene
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The crystals pushed the germs away until there was 110 water left then, there being no place for the germs to go, they were caught between the sides of the crystals and embedded in the ice. This very thing some- times happens in shallow pools they freeze clear to the bottom, and ice from such pools is unfit to use. But on a fairly deep lake or river, the dirt and germs, as the ice freezes, are almost all pushed into the water below just as they were in Professor Sedgwick's cask.
Then how is it ...that lake and river ice is often dirty? Suppose we go, in imagination, to one of the ice-houses on the Hudson Eiver. We shall see, that, on the sur- face of the ice, leaves, weeds and twigs have been caught and frozen fast. Then too, the men and horses who tend the ice-ploughs, mark off the ice into strips and squares, and steer it through the water to the ice-house, have tramped all over the ice and left it muddy and dirty.
Beside this, the ice has sometimes been "tapped" or "flooded. " When it snows, the ice-farmer feels that his ice is in danger, for all skaters know that the snow is like a warm blanket which keeps the cold air away from the ice and hinders its freezing quickly.
What to read after Good Neighbors a Study in Vocational And Community Hygiene?
You can find similar books in the "Read Also" column, or choose other free books by Mary S Haviland to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The crystals pushed the germs away until there was 110 water left then, there being no place for the germs to go, they were caught between the sides of the crystals and embedded in the ice. This very thing some- times happens in shallow pools they freeze clear to the bottom, and ice from such pools is unfit to use. But on a fairly deep lake or river, the dirt and germs, as the ice freezes, are almost all pushed into the water below just as they were in Professor Sedgwick's cask.
Then how is it ...that lake and river ice is often dirty? Suppose we go, in imagination, to one of the ice-houses on the Hudson Eiver. We shall see, that, on the sur- face of the ice, leaves, weeds and twigs have been caught and frozen fast. Then too, the men and horses who tend the ice-ploughs, mark off the ice into strips and squares, and steer it through the water to the ice-house, have tramped all over the ice and left it muddy and dirty.
Beside this, the ice has sometimes been "tapped" or "flooded. " When it snows, the ice-farmer feels that his ice is in danger, for all skaters know that the snow is like a warm blanket which keeps the cold air away from the ice and hinders its freezing quickly.
What to read after Good Neighbors a Study in Vocational And Community Hygiene?
You can find similar books in the "Read Also" column, or choose other free books by Mary S Haviland to read onlineMoreLess
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