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Article SCIENTIFIC INTELLIGENCE. ← Page 4 of 4
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Scientific Intelligence.
some seconds , there was an explosion like a lengthened clap of thunder , or the loud report of a cannon . This meteor diffused such a light , that ( lav seemed to have returned , and people in dark apartments could see each other . ' This g lobe wis at such a distance , that it could be seen , at the same time , in places seven or eight leagues asunder . A description of : ii was sent to me by citizen . Riboud . at josseranancl citizen Langeron
, , at Tlmrsey . Had it been at a greater distance , it would have appeared only like those failing stars which are observed so frequently . The common cause of these phenomena appears to be hydrogenous gas , set on fire , by some means , in the atmosphere . '
NATURAL HISTORT . A short time before his decease , the King of Poland presented to the Emperor of Russia a curious stone , about the size of a large pea , and of an ash colour , which had received the name of the Mineral Polypus . What is wonderful in this stone is , that though opaque , and having no transparent part , after being laid in water , it begins , in less than six minutesto appear shining af the edgesand to communicate
, , to the water a sort of luminous shade , of the colour . of yellow amber ; it afterwards passes from yellow to the-colour of an amethyst , and from thence successively to black , white , and a cloudy colour , and , as it were , surrounded with smoke . At last it appears quite brilliant , entirely transparent , and of a very beautiful ye . llosv amber , colour . Taken out of the water , it returns to its former opaque state , after being
coloured successively , ancl in a retrogade order , with the same dyes it had before assumed in the water . I'his stone is probably the same which M . Andrew Cnoffelius , one of the physicians of the court of Portugal informs us , that he purchased , many years ago , of a famous lapidary of Thorn , and its remarkable properties he describes in the Ephemerides of the curious . The Doctor concludes his account of the stone with observing , that it is natural ; and not a production of art ; and that it may be regarded as a proof of the existence of a formal light in nature .
METHOD OF TANNING WITHOUT OAK BARK . THE German counsellor Wekrs having paid great attention to this subject , assisted by Mr . Foehlman , an ingenious tanner , has communicated the result of theirexperimeiits . They commenced theirjoint experiments upon the Sumach ( rbus coriaria ) with which Germany abounds . The result has exceeded their most sanguine expectations .
The tanners and cordwainers have found , that calf-skin , prepared in this manner , equals the best English leather ; and are eager to purchase it at two florins per pound weig ht ; whereas , formerly , ihe best homemanufactured leather would not fetch more than one florin per pound . It is in great request for shoes aud boots : aud Mons . Foehlman is prosecuting his experiments on various other kinds of trees and plants ,
under the direction of M . Wekrs . This is not the only discovery for which the arts are indebted to the latter gentleman . The hats , manufactured from vegetable substances , which are worn at Lunenburg , and which are remarkable for durability and lightness , are his invention .
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
Scientific Intelligence.
some seconds , there was an explosion like a lengthened clap of thunder , or the loud report of a cannon . This meteor diffused such a light , that ( lav seemed to have returned , and people in dark apartments could see each other . ' This g lobe wis at such a distance , that it could be seen , at the same time , in places seven or eight leagues asunder . A description of : ii was sent to me by citizen . Riboud . at josseranancl citizen Langeron
, , at Tlmrsey . Had it been at a greater distance , it would have appeared only like those failing stars which are observed so frequently . The common cause of these phenomena appears to be hydrogenous gas , set on fire , by some means , in the atmosphere . '
NATURAL HISTORT . A short time before his decease , the King of Poland presented to the Emperor of Russia a curious stone , about the size of a large pea , and of an ash colour , which had received the name of the Mineral Polypus . What is wonderful in this stone is , that though opaque , and having no transparent part , after being laid in water , it begins , in less than six minutesto appear shining af the edgesand to communicate
, , to the water a sort of luminous shade , of the colour . of yellow amber ; it afterwards passes from yellow to the-colour of an amethyst , and from thence successively to black , white , and a cloudy colour , and , as it were , surrounded with smoke . At last it appears quite brilliant , entirely transparent , and of a very beautiful ye . llosv amber , colour . Taken out of the water , it returns to its former opaque state , after being
coloured successively , ancl in a retrogade order , with the same dyes it had before assumed in the water . I'his stone is probably the same which M . Andrew Cnoffelius , one of the physicians of the court of Portugal informs us , that he purchased , many years ago , of a famous lapidary of Thorn , and its remarkable properties he describes in the Ephemerides of the curious . The Doctor concludes his account of the stone with observing , that it is natural ; and not a production of art ; and that it may be regarded as a proof of the existence of a formal light in nature .
METHOD OF TANNING WITHOUT OAK BARK . THE German counsellor Wekrs having paid great attention to this subject , assisted by Mr . Foehlman , an ingenious tanner , has communicated the result of theirexperimeiits . They commenced theirjoint experiments upon the Sumach ( rbus coriaria ) with which Germany abounds . The result has exceeded their most sanguine expectations .
The tanners and cordwainers have found , that calf-skin , prepared in this manner , equals the best English leather ; and are eager to purchase it at two florins per pound weig ht ; whereas , formerly , ihe best homemanufactured leather would not fetch more than one florin per pound . It is in great request for shoes aud boots : aud Mons . Foehlman is prosecuting his experiments on various other kinds of trees and plants ,
under the direction of M . Wekrs . This is not the only discovery for which the arts are indebted to the latter gentleman . The hats , manufactured from vegetable substances , which are worn at Lunenburg , and which are remarkable for durability and lightness , are his invention .