The Preparation And Mounting of Microscopic Objects
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In our eReader you can find the full English version of the book. Read The Preparation And Mounting of Microscopic Objects 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 The Preparation And Mounting of Microscopic Objects
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They are generally very much interrupted in their structure ; but by turning over a considera- ble quantity of the ordinary saltpetre* of the shops specimens are readily found which have perfectly transparent portions of some extent. Selecting one of these, cut it with a knife into a plate above a quarter of an inch thick, directly across the axis of the prism, and then grind it down on a broad wet file till it is reduced to about one quarter or a sixth of an inch thick, smooth the surface on a... wet piece of emeried glass, and polish on a piece of silk strained very tight over a strip of plate-glass, and rubbed with a mixture of tallow and colcothar of vitriol. This operation requires practice. It cannot be effected unless the nitre be applied wet and rubbed till quite dry, increasing the rapidity of the fric- tion as the moisture evaporates. It must be performed in gloves, as the vapour from the fingers, as well as the slightest breath, dims the polished surface effectually. With these precautions a perfect vitreous polish is easily obtained.
What to read after The Preparation And Mounting of Microscopic Objects?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Davies to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
They are generally very much interrupted in their structure ; but by turning over a considera- ble quantity of the ordinary saltpetre* of the shops specimens are readily found which have perfectly transparent portions of some extent. Selecting one of these, cut it with a knife into a plate above a quarter of an inch thick, directly across the axis of the prism, and then grind it down on a broad wet file till it is reduced to about one quarter or a sixth of an inch thick, smooth the surface on a... wet piece of emeried glass, and polish on a piece of silk strained very tight over a strip of plate-glass, and rubbed with a mixture of tallow and colcothar of vitriol. This operation requires practice. It cannot be effected unless the nitre be applied wet and rubbed till quite dry, increasing the rapidity of the fric- tion as the moisture evaporates. It must be performed in gloves, as the vapour from the fingers, as well as the slightest breath, dims the polished surface effectually. With these precautions a perfect vitreous polish is easily obtained.
What to read after The Preparation And Mounting of Microscopic Objects?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Davies to read onlineMoreLess
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