Elements of Science and Art: Being a Familiar Introduction to Natural Philosophy and Chemistry; Together with Their Application to a Variety of Elegant and Useful Arts, Volume 2 |
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Common terms and phrases
acetic acid gas alkalies alkohol alum ammonia angles antimony appear aqua fortis bark bleaching blue body boiling called carbonic acid cement charcoal cloth cold colouring matter combined combustion common consists copper cupellation degree dissolved distilled draw drawn dyeing earth ellipsis employed equal evaporated exposed fecula fire fluid formed gilding glass glue gold grains heat hydrogen hydrogen gas indigo iron isinglass lead light lime linen liquid liquor manner melted mercury metal mixed mixture mordant mould muriatic acid nitrate nitric acid nitrous obtained ounces oxide oxygen oxygen gas paper phosphorus piece plate potash powder precipitate Prob procured produced proportion purpose quantity quercitron resin retort rubbed sal ammoniac salt seed-lac side silver soda soluble solution spirits of wine stain substance sulphate sulphuret sulphuric acid surface tube turpentine varnish vegetable vessel washed wood yellow
Popular passages
Page 355 - The circumference of every circle, whether great or small, is supposed to be divided into 360 equal parts, called degrees ; and every degree into GO parts, called minutes; and every minute into 60 seconds. To measure the inclination of lines to each other, or angles, a circle is described round the
Page 360 - are said to be proportional, when the ratio of the first to the second is the same as that of the second to the third. Thus, 2, 4, 8, are proportional, because 4 is contained in 8 as many times as 2 is in 4.
Page 398 - am not afraid that I shall repeat it too often. You must have no dependence on your own genius. If you have great talents industry will improve them: if you have moderate abilities, industry will supply their deficiency.
Page 398 - There is one precept," he observes, " in which I shall be opposed only by the vain, the ignorant, and the idle. I am not afraid that I shall repeat it too often. You must have no dependence on your own genius. If you have great talents industry will improve them: if you have moderate abilities, industry will supply their deficiency.
Page 394 - that a great part of every man's life must be employed in collecting materials for the exercise of genius. Invention, strictly speaking, is little more than a new combination of those
Page 397 - have an easy communication, and gracefully follow each other with such natural negligence, as to look like the effect of chance, and at the same time show the figure under it to the utmost advantage. In the higher style of painting, the difference in the materials
Page 396 - is what we call invention in a painter. In the conception of this ideal picture, all the little circumstances should be contrived in such a manner, that they shall strike the spectator no more than they did himself in his conception of the story. Thus there must be a principal object, which should receive the principal mass of light;
Page 362 - into two equal parts. From the points A and B as centres, and with any opening of the compasses greater than half AB, describe arches cutting each other in c and d. Draw the line cd ; and the point E, where it cuts AB, will be the middle required.
Page 302 - over the rivets and edges of the sheets of copper in large boilers, to serve as an additional security to the joinings, and to secure cocks, &c. from leaking, is made by mixing pounded quick-lime with ox's blood. It must be applied fresh made, as it soon gets hard.
Page 297 - or ammoniacum, which must be rubbed or ground till they are dissolved; then mix the whole with a sufficient heat; keep it in a phial stopt, and when it is to be used set it in hot water. A Cement