A Treatise on the Progressive Improvement and Present State of the Manufactures in Metal, المجلد 1

الغلاف الأمامي
Longman, Rees, Orme, Brown, and Green, 1831 - 341 من الصفحات
 

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الصفحة 153 - Now there was no smith found throughout all the land of Israel : for the Philistines said, Lest the Hebrews make them swords or spears...
الصفحة 153 - So it came to pass in the day of battle, that there was neither sword nor spear found in the hand of any of the people that were with Saul and Jonathan: but with Saul and with Jonathan his son was there found...
الصفحة 191 - I was surprised at the prodigious number of blacksmiths' shops upon the road; and could not conceive how a country, though populous, could support so many people of the same occupation. In some of these shops I observed one or more females...
الصفحة 157 - With open mouth swallowing a tailor's news ; Who with his shears and measure in his hand, Standing on slippers, (which his nimble haste Had falsely thrust upon contrary feet,) Told of many thousand warlike French That were embattel'd and rank'd in Kent.
الصفحة 249 - At other times, when silver and steel have been very long in a state of perfect fusion, the sides of the crucible, and frequently the top also, are covered with a fine and beautiful dew of minute globules of silver ; this effect can be produced at pleasure. At first we were not successful in...
الصفحة 28 - Every six days they call a founday, in which space they make eight tun of iron, if you divide the whole sum of iron made by the foundays : for at first they make less in a founday, at last more. The hearth by the force of the fire, continually blown, grows wider and wider, so that...
الصفحة 104 - ... feet broad, with a handrail on one side, and planked in such a manner, that the traveller experiences all the tremulous motion of the chain, and sees himself suspended over a roaring gulph, on an agitated and restless gangway, to which few strangers dare trust themselves.
الصفحة 151 - On no malleable iron railway has oxydization or rusting taken place to any important extent. I am inclined to think that this effect is prevented on the bearing surfaces of much used railways, by the pressure upon them. To account for their extraordinary freedom from rust, it is almost necessary to suppose, that some diminution takes place in the chemical affinity of the iron for the oxygen or carbonic acid. The continual smoothness in which they are kept, by the contact of the wheels, has the usual...
الصفحة 27 - The hearth, or bottom of the furnace, is made of sandstone, and the sides round, to the height of a yard, or thereabout ; the rest of the furnace is lined up to the top with brick. When they begin upon a new furnace they put fire for a day or two before they begin to blow.

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