The Repertory of arts and manufactures [afterw.] arts, manufactures and agriculture |
Բովանդակություն
| 1 | |
| 21 | |
| 25 | |
| 27 | |
| 37 | |
| 48 | |
| 56 | |
| 66 | |
| 208 | |
| 236 | |
| 241 | |
| 250 | |
| 255 | |
| 257 | |
| 285 | |
| 290 | |
| 81 | |
| 86 | |
| 89 | |
| 107 | |
| 121 | |
| 149 | |
| 159 | |
| 171 | |
| 179 | |
| 205 | |
| 349 | |
| 354 | |
| 364 | |
| 385 | |
| 389 | |
| 398 | |
| 411 | |
| 414 | |
| 418 | |
| 446 | |
Այլ խմբագրություններ - View all
Common terms and phrases
acrospire alkali alum amianthus ammonia apparatus appeared barley barytes bees bitumen body boiler bottom bricks carriage caustic alkali centre charcoal clay coal combination containing copper corn crystallised cylinder degree described distilled water earth electrical evaporation examiners experiments fair or market feet fixed floors fluid frame fulcrum gills grain ground harrow heat Hertfordshire hydrogen improved inches invention iron Langreo leather lever lime liquor Malt manner means metal method mode mould muriatic acid negative nitric acid observed operation oxyd oxygen pass Patent piece pipes pit-coal placed planks plants plate plough positive potash present produce pulley purpose quantity radicle regulations rollers rope salt schiste screws seed shew ship or vessel ships and vessels side soda solution spirits of wine springs steam substance sufficiently sulphate sulphuric acid surface tannin tanning thereof thick tion trough tube turmeric vegetable weight wheel wire XII.-SECOND SERIES
Սիրված հատվածներ
Էջ 179 - Now Know Ye, that in compliance with the said proviso, I, the said Adolphe Nicole, do hereby declare that the nature of my said Invention, and the manner in which the same is to be performed, are...
Էջ 33 - A young spaniel brought up with the terriers shewed no marks of emotion at the scent of the polecat, but it pursued a woodcock the first time it saw one, with clamour and exultation ; and a young pointer, which I am certain had never seen a partridge, stood trembling with anxiety, its eyes fixed, and its muscles rigid, when conducted into the midst of a covey of those birds. Yet each of these dogs are mere varieties of the same species, and to that species none of these habits are given by nature.
Էջ 261 - ... that hydrogen, the alkaline substances, the metals, and certain metallic oxides, are attracted by negatively electrified metallic surfaces, and repelled by positively electrified metallic surfaces ; and contrariwise, that oxygen and acid substances are attracted by positively electrified metallic surfaces, and repelled by negatively electrified metallic surfaces ; and these attractive and repulsive forces are sufficiently energetic to destroy or suspend the usual operation of elective affinity.
Էջ 35 - But if one escape from within, it comes with a very different temper, and appears commissioned to avenge public wrongs,, and prepared to sacrifice its life in the execution of its orders.
Էջ 272 - In the present state of our knowledge, it would be useless to attempt to speculate on the remote cause of the electrical energy, or the reason why different bodies, after being brought into contact, should be found differently electrified; its relation to chemical affinity is, however, sufficiently evident. May it not be identical with it, and an essential property of matter?
Էջ 291 - In this flue dry bavins, coals, and cinders (vulgarly called brees.e) are laid and pressed in close, in order that the interstices between wood and coal may be properly filled up. On the sides of the flue, the bricks are placed diagonally about one inch asunder, and between each layer of bricks three or four inches of breese are strewed, and in this manner they build tier upon tier as high as the clamp is meant to be ; never omitting between each layer, as well as between each brick, that is placed...
Էջ 271 - As the chemical attraction between two bodies seems to be destroyed by giving one of them an electrical state different from that which it naturally possesses ; that is, by bringing it artificially into a state similar to the other, so it may be increased by exalting its natural energy. Thus, whilst zinc, one of the most...
Էջ 280 - I had to a certain extent adopted this opinion," an opinion of Fabroni's ; " but the new fact immediately proved that another power must necessarily be concerned, for it was not possible to refer the electricity exhibited by the opposition of metallic surfaces to any chemical alterations, particularly as the effect is more distinct in a dry atmosphere, in which even the most oxidizable metals do not change, than in a moist one, in which many metals undergo oxidation.
Էջ 282 - ... capable of being separated from their combinations in living systems by electrical powers, there is every reason to believe that by converse methods they may be likewise introduced into the animal economy, or made to pass through the animal organs : and the same thing may be supposed of metallic oxides ; and these ideas ought to lead to some new investigations in medicine and physiology.
Էջ 293 - It taken in not overheating the kiln, but in causing it to burn moderately, as equably and as diffusively at the same time as possible. In the country, bricks are always burnt in kilns, whereby less waste arises, less fuel is consumed, and the bricks are sooner burnt. The bricks are first set or placed in it, and then the kiln being covered with pieces of bricks or tiles, they put in some wood to dry them with a gentle fire ; and this they continue .until the bricks are pretty dry, which takes up...