Scientific American
The illustrations and descriptions we give this week, entitled "How to Break a Cord," "Prestidigitation," "Circle Divider," "Sulphurous Acid," "Production of Gas," "Aquatic Velocipede," "Several Toys," "Scientific Amusements," are from our excellent contemporary _La Nature_.
This solution will keep for ever, and will be sufficient to last two or three years, and with this at hand you will be able in two days to prepare a batch of plates at any time....
6. Chapter 6We show herewith the method employed by the Baltimore Car Wheel Company in casting chilled wheels to prevent tread defects. The ordinary mode of pouring from the ladle into the...
3. Chapter 3Soluble glass has also been applied to painting on glass in imitation of glass staining. By using sulphate of baryta, ultramarine, oxide of chrome, etc., mixed with silicate of...
1. Chapter 1The illustrations and descriptions we give this week, entitled "How to Break a Cord," "Prestidigitation," "Circle Divider," "Sulphurous Acid," "Production of Gas," "Aquatic Velo...
2. Chapter 2Fine pulverization of the sample is not essential, and in fact is rather detrimental, as the graphite, when fine, is more difficult to wash without loss. When operating on a coa...
7. Chapter 71 200 1 100 1 100 2 400 4 400 3 300 3 600 9 900 5 500 4 800 16 1,600 7 700 5 1,000 25 2,500 9 900 6 1,200 36 3,600 11 1,100 7 1,400 49 4,900 13 1,300 8 1,600 64 6,400 15 1,500 9...
5. Chapter 5Not the least important part of the process with regard to its economy is the boiling down of the soda lye in order to bring it back to the degree of concentration which is requ...
8. Chapter 8In the actual apparatus the sphere is an ordinary round-bottomed flask about 95 mm. in diameter, and the lens a simple double convex lens of about 90 mm. focal length. The sensi...