The Cabinet of Arts: Or, General Instructor in Arts, Science, Trade, Practical Machinery, the Means of Preserving Human Life, and Political Economy |
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Page 10
... Wheel , the Inclined Plane , the Wedge , and the Screw : But these may all be reduced to two ; for the pulley and the wheel are only assemblages of levers , and the wedge and screw are inclined planes . The Lever is the simplest of all ...
... Wheel , the Inclined Plane , the Wedge , and the Screw : But these may all be reduced to two ; for the pulley and the wheel are only assemblages of levers , and the wedge and screw are inclined planes . The Lever is the simplest of all ...
Page 12
... . The friction of the beam upon the axis ought to be reduced as much as possible ; the axis should be formed with an edge like a knife and extremely hard . The wheel and axle are employed in a great variety 18 MECHANICS .
... . The friction of the beam upon the axis ought to be reduced as much as possible ; the axis should be formed with an edge like a knife and extremely hard . The wheel and axle are employed in a great variety 18 MECHANICS .
Page 13
... wheel and axle are employed in a great variety of ways ; the power being applied to the wheel , and the weight to the axle . Suppose a wheel of 6 feet diameter , and consequently of 18 feet 10 inches circum- ference , be fixed on an ...
... wheel and axle are employed in a great variety of ways ; the power being applied to the wheel , and the weight to the axle . Suppose a wheel of 6 feet diameter , and consequently of 18 feet 10 inches circum- ference , be fixed on an ...
Page 14
... wheel turning on an axis , with a drawing rope passing over the wheel : the wheel is usually called the sheave , and it is so fixed in the case or block as to turn on a pin , passing through its centre . Pullies are of two sorts , fixed ...
... wheel turning on an axis , with a drawing rope passing over the wheel : the wheel is usually called the sheave , and it is so fixed in the case or block as to turn on a pin , passing through its centre . Pullies are of two sorts , fixed ...
Page 15
... wheel - barrows , & c . up to a height to which it would be very difficult to lift them directly . The force with which any body descends upon a slope , or inclined plane is to the force with which it would fall per- pendicularly to the ...
... wheel - barrows , & c . up to a height to which it would be very difficult to lift them directly . The force with which any body descends upon a slope , or inclined plane is to the force with which it would fall per- pendicularly to the ...
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alkali antimony appear applied artist balloon blue body boiling bottom called carbonic carbonic acid centre charcoal clay cloth cold colour column common composition contain copper crop degree diameter dissolved distance distilled draw drying oil earth effect employed equal feet fermentation filled fire fixed fluid gallons glass gold ground half heat hole inches iron isinglass laid light lime liquor machine manner meal powder melted mercury metals method mixed mixture mordant mortar motion muriatic muriatic acid nature nitric acid objects observed ounce oxyde oxygen painter painting paper piece pipe plants plate plough potass pounds produced proper proportion quantity rays rectified spirit rockets salt saltpetre seed-lac side silver soil spirits of wine stone substances sufficient sulphuric acid surface thick tints tion Titian turnips varnish vessel weight wheel whole wood yellow
Popular passages
Page 108 - And it came to pass, as soon as he came nigh unto the camp, that he saw the calf, and the dancing : and Moses' anger waxed hot, and he cast the tables out of his hands, and brake them beneath the mount.
Page 110 - None from henceforth shall use to multiply gold or silver, or use the craft of multiplication; and if any the same do, he shall incur the pain of felony.
Page 340 - Claude, are gilded with the setting sun; whether the mountains have sudden and bold projections, or are gently sloped; whether the branches of his trees shoot out abruptly in right angles from their trunks, or follow each other with only a gentle inclination. All these circumstances contribute to the general character of the work, whether it be of the elegant, or of the more sublime kind. If we add to this the powerful materials of lightness...
Page 355 - ... the object which it illumines, as it does in nature ; this is likewise an intended deviation, and for the same reason. If Rubens had preserved the same scale of gradation of light between the Moon and the objects, which is found in nature, the picture must have consisted of one small spot of light only, and at a little distance from the picture nothing but this spot would have been seen.
Page 79 - If it is white, you will not easily burn it; but if you bring the focus to a black spot, or upon letters, written or printed, the paper will immediately be on fire under the letters. Thus fullers and dyers find black cloths of equal thickness with white ones, and hung out equally wet, dry in the sun much sooner than the white, being more readily heated by the sun's rays.
Page 323 - Inspiration; his ideas are vast and sublime; his people are a superior order of beings ; there is nothing about them, nothing in the air of their actions or their attitudes, or the style and' cast of their limbs or features, that reminds us of their belonging to our own species.
Page 333 - I reflect not without vanity, that these Discourses bear testimony of my admiration * Che Raffaelle non ebbe quest" arte da nutura, ma per lunyo studio. of that truly divine man, and I should desire that the last words which I should pronounce in this Academy, and from this place, might be the name of — MICHAEL ANGELO*.
Page 366 - who takes for his model such forms as Nature produces, and confines himself to an exact imitation of them, will never attain to what is perfectly beautiful. For the works of Nature are full • I.ih.
Page 366 - ... of the art in which English artists are the most engaged, a variety, a fancy, and a dignity derived from the higher branches, which even those who professed them in a superior manner did not always preserve when they delineated individual nature. His portraits remind the spectator of the invention of history and of the amenity of landscape. In painting portraits he appears not to be raised upon that platform, but to descend to it from a higher sphere. His paintings illustrate his lessons, and...
Page 365 - The principle now laid down, that the perfection of this art does not consist in mere imitation, is far from being new or singular. It is, indeed, supported by the general opinion of the enlightened -part of mankind. The poets, orators, and rhetoricians of antiquity, are continually enforcing this position ; that all the arts receive their perfection from an ideal beauty, superior to what is to be found in individual nature.