Object Lessons And How to Give Them Second Series for Intermediate And Grammar
Object Lessons And How to Give Them Second Series for Intermediate And Grammar
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In our eReader you can find the full English version of the book. Read Object Lessons And How to Give Them Second Series for Intermediate And Grammar 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 Object Lessons And How to Give Them Second Series for Intermediate And Grammar
What reading level is Object Lessons And How to Give Them Second Series for Intermediate And Grammar book?
To quickly assess the difficulty of the text, read a short excerpt:
This vapour condenses in cool earthenware pipes as liquid mercury.
II r. Us-s.
I. For "silvering" looking-glasses.
A piece of tin-foil, of the same size as the glnss fo be " silvered, " is spread on a perfectly flat and smooth stone. Mercury is poured on the tin-foil and made to cover it. The glass plate is then caused to slide gently over, not quite 48 OBJECT LESSONS.
touching the tin -foil. The glass thus sweeps off a large proportion of the mercury and all the air, leaving but a thin film of... the liquid metal. Next the glass is heavily weighted. In a short time the mercury and the tin-foil form a solid amalgam J which adheres to the plate.
Exp. 72. The teacher can illustrate the formation of amalgams by working up a little tin-foil, such as is used for wrapping round tobacco, with mercury until the mixture has the consistency of putty.
2. For the extraction of silver and gold from their crushed ores.
The mercury forms an amalgam with these metals. To obtain the precious metals the mercury is driven off by heat.
What to read after Object Lessons And How to Give Them Second Series for Intermediate And Grammar?
You can find similar books in the "Read Also" column, or choose other free books by George Ricks to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This vapour condenses in cool earthenware pipes as liquid mercury.
II r. Us-s.
I. For "silvering" looking-glasses.
A piece of tin-foil, of the same size as the glnss fo be " silvered, " is spread on a perfectly flat and smooth stone. Mercury is poured on the tin-foil and made to cover it. The glass plate is then caused to slide gently over, not quite 48 OBJECT LESSONS.
touching the tin -foil. The glass thus sweeps off a large proportion of the mercury and all the air, leaving but a thin film of... the liquid metal. Next the glass is heavily weighted. In a short time the mercury and the tin-foil form a solid amalgam J which adheres to the plate.
Exp. 72. The teacher can illustrate the formation of amalgams by working up a little tin-foil, such as is used for wrapping round tobacco, with mercury until the mixture has the consistency of putty.
2. For the extraction of silver and gold from their crushed ores.
The mercury forms an amalgam with these metals. To obtain the precious metals the mercury is driven off by heat.
What to read after Object Lessons And How to Give Them Second Series for Intermediate And Grammar?
You can find similar books in the "Read Also" column, or choose other free books by George Ricks to read onlineMoreLess
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