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Facts ;n Physics.-Gold beaters, by , hammering, reduce gold to leaves so thin that s82 .OOO must be laid on each one, to produce the thickness of an inch. They are SO thin. that if formed into d book 800 would occupy the space of single leaf of common paper. .,,

 A grain of blue vitriol, or carmine, will tinge a gallon of water, so that in every drop the color may be perceived and grain of musk will scent room for twenty years.

 A stone which on land requires the !, strength of two men to lift it, may be lift- ed when in water by one man.

 A ship draws less water by one thirty fifth in the heavy salt water, than in the water of river, and man may support himself moro easily in the sea than in a river.

 An immense weight may be raised a short distance, by first tightening dry rope between it and support, and then wetting the rope. The moisture imbibed into the rope by capillary attraction causes ' it to become shorter. X A rod of iron, which, when cold, will pass through certain opening, when heat ed goes on loosely, and when cold it binds the wheel most tightly.

 One pint of water converted into steam, fills a space of nearly 2O0O pints, and rais- es the piston of steam engine with force of many thousand pounds. It may after wards be condensed and .re-appear as pint of water. .

 A cubic inch of lead is forty times heav- fer than the same bulk of water.

 Sound travels in water about four times quicker, and in solids from ten to twenty times quicker than in air.

 Thrilling Sceae.--"I once (says Dr. Currie ofs LiverpooO in my early days, heard, for it was'night, and I could not see, traveller drowning, not in the Anan, but Y in the firth of Solway, close by the mouth of that river. The influx of the tide had unhorsed him in the night, as he was pass ing the sands from Cumberland. The west wind blew tempest, and according to the common expression brought in tho water three feet abreast. The traveller got up- on standing not little way from the shore. There he lashed himself to the post, shouting for half an hour for assist ance till the tide rose over his head

 In. the darkness of the nighl, and amid the pauses of tho hurricane, his voice, heard at intervals, was exquisitely mourn tul. No one could go to his assistance no one knew where he was the sound seemed to proceed from the spirit of the waters. But morning rose-the tide had SoOeo, ana Inc poor traveller was found iashed to tue pole of the net, and bleach

 ing in the winds"