ما يقوله الناس - كتابة مراجعة
لم نعثر على أي مراجعات في الأماكن المعتادة.
طبعات أخرى - عرض جميع المقتطفات
acid admit apparatus appears atmosphere axis boiler boiling bottom brass brine cafe carbonic carbonic acid chamber citrate citric citric acid colour common construction contain convenient cylinder decoction degree diameter distance drachms drawing earth effects employed equal evaporation experiments extract fame fastened feet fermentation fluid fuel glass grate heated air horizontal improved inches invention iron juice laudanum letters patent lever lime lock machine magnesia manganese manner manufacture means ment metal method mixed mucilage muriatic muriatic acid necessary nitrous observed obtained opium orisice oxygen pallet particles Patent piece pipe plate plunger poppy potash Pozzolana prevent produced proportion pulley purpose putrid quantity render reservoir round salt screw side silled sire sirst sive sixed smoke-chamber specisic steam steel substances sufficient sulphuric acid surface tamborine tion tube upper valve velocity vessel weight wheel white poppy wood yeast
الصفحة 386 - ... a passage into the glass tube, served as a water-gauge or barometer. There was a piece of cork with phosphorus on it, put into the water-gauge.
الصفحة 392 - I have no doubt but he would have found wood where he might have fixed the screw, or if the ship were sheathed with copper he might easily have pierced it ; but not being well skilled in the management of the vessel, in attempting to move to another place he lost the ship. After seeking her in vain for...
الصفحة 389 - Behind the submarine vessel, is a place above the rudder for carrying a large powder magazine; this is made of two pieces of oak timber, large enough when hollowed out, to contain one hundred and fifty pounds of powder, with the apparatus used for firing it, and is secured in its place, by a screw turned by the operator. It is lighter than water, that it may rise against the object to which it is intended to be fastened. Within the magazine, is an apparatus constructed to run any proposed length...
الصفحة 240 - Procure three earthen or wooden veflels of different fizes and apertures, one capable of holding two quarts, the other three or four, and the third five or fix : boil a quarter of a peck of malt for about eight or ten minutes in three pints of water; and, when a quart is poured off from the grains, let it...
الصفحة 388 - ... or the valves on their tops. Wherever the external apparatus passed through the body of the vessel, the joints were round, and formed by...
الصفحة 391 - A, into her bottom, &c., until I thought him sufficiently expert to put my design into execution. " I found, agreeably to my expectations, that it required many trials to make a person of common ingenuity a skilful operator.
الصفحة 394 - We went as near the shipping as we durst venture. I believe the darkness of the night greatly deceived him, as it did me. We set them adrift, to fall with the ebb upon the shipping. Had we been within sixty rods...
الصفحة 390 - ... oak plank between the hogshead and the powder ; the hogshead was loaded with stones as deep as it could swim. A wooden pipe descending through the lower head of the hogshead, and through the plank into the powder contained in the bottle, was primed with powder A match, put to the priming, exploded the powder, which produced a very great effect, rending the plank into pieces ; demolishing the hogshead, and casting the stones...
الصفحة 393 - In the year 1777 I made an attempt from a whale-boat against the Cerberus frigate, then lying at anchor between Connecticut River and New London, by drawing a machine against her side by means of a line. The machine was loaded with powder, to be exploded by a gunlock, which was to be unpinioned by an apparatus to be turned by being brought alongside of the frigate.