-
Articles/Ads
Article SCIENTIFIC INTELLIGENCE. Page 1 of 4 →
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
Scientific Intelligence.
SCIENTIFIC INTELLIGENCE .
BY this operation books are not only cleaned , but the paper acquires a degree of whiteness superior tp what it possessed when first made . The use of this acid is attended also with the valuable advantage of destroying ink When I had to repair prints so torn that they exhibited only scraps pasted upon other paper , I was afraid of losing these fragments in the liquid , because ( lie paste became dissolved . In such cases I enclosed the prints in a cylindric lass vesselwinch inverted
g , I on the water in which I had put the mixture proper for extricating the oxygenated muriatic acid gas . This vapour , by filling the whole inside ofthe jar , afted upon the print ; extrafted the grease as well as ink spots ; and the fragments remained pasted to the paper . ' ' METHOD OF PREPARING THE' OXYGENATED MURIATIC ACID . To oxygenate the muriatic acid , nothing is necessary but to to dilute it , and mix it in
a very strong glass vessel with manganese , in such a manner that the mixture may not occupy the whole of the glass . Air bubbles are formed on the surface of the liquor ; the empty space becomes filled with a . greenish vapour ; and , at the end of some hours , the ' acid may be farther dilated with water , and then used . It has an acid taste , because the whole is not saturated with oxygen ; but it possesses all the virtues of the oxygenated muriatic acid . This process may be followed when there is not time to set up an apparatus for distilling , in order to procure the oxygenated acid .
CHAPTAVS PROCESS FOR WHITENING BOOKS , PRINTS , U fcOSCLUDED FROM OVH LAST . ]
INOCULATION FROM THE COW-POX . Two interesting publications have lately appeared from the oens of Doctors Pearson and Jenner upon the cause and effects of the Variola Vaccina , or U > iv-pox . Their object is to root out the Small-pox , a disease which has wept away an immensel y greater number of victims from the world than ( lie amount of all that have been destroyed by the plague or pestilence . - Opinions are not agreed as to the ori gin of this disease in cows ; some supposing that it binfection
they get y from men milking them , who have been Previously applying dressings to the heels of horses affected with the grease ; wiule others , with more probability , consider it as being in the first instance compounded m the animal ceconomy of the cow ; after which , it may be conveyed to any number ( in an obvious way ) by the hands ofthe milkers , as « e seat ot the disease is m the breast and teats , which are covered with 'uptions similar to the small-pox . But its origin is of no importance —its "PPHcation to the benefit of
mankind is what demands the greatest attention , it is a singular fact , that it has been long known by country farmers and 'iw-s that this disease , which in several counties prevails at ' particular j W > ns among tlie cows , and is often communicated to the hands of the "Wi's , exempts such as have been so infected from being infected uith i ,, l , l " . pox' If 1 S "" ll . more singular , that though they knew this fair , ' also that no cow" or human being hadever been known to die ofthe cow-VOL . XI . 3 H
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
Scientific Intelligence.
SCIENTIFIC INTELLIGENCE .
BY this operation books are not only cleaned , but the paper acquires a degree of whiteness superior tp what it possessed when first made . The use of this acid is attended also with the valuable advantage of destroying ink When I had to repair prints so torn that they exhibited only scraps pasted upon other paper , I was afraid of losing these fragments in the liquid , because ( lie paste became dissolved . In such cases I enclosed the prints in a cylindric lass vesselwinch inverted
g , I on the water in which I had put the mixture proper for extricating the oxygenated muriatic acid gas . This vapour , by filling the whole inside ofthe jar , afted upon the print ; extrafted the grease as well as ink spots ; and the fragments remained pasted to the paper . ' ' METHOD OF PREPARING THE' OXYGENATED MURIATIC ACID . To oxygenate the muriatic acid , nothing is necessary but to to dilute it , and mix it in
a very strong glass vessel with manganese , in such a manner that the mixture may not occupy the whole of the glass . Air bubbles are formed on the surface of the liquor ; the empty space becomes filled with a . greenish vapour ; and , at the end of some hours , the ' acid may be farther dilated with water , and then used . It has an acid taste , because the whole is not saturated with oxygen ; but it possesses all the virtues of the oxygenated muriatic acid . This process may be followed when there is not time to set up an apparatus for distilling , in order to procure the oxygenated acid .
CHAPTAVS PROCESS FOR WHITENING BOOKS , PRINTS , U fcOSCLUDED FROM OVH LAST . ]
INOCULATION FROM THE COW-POX . Two interesting publications have lately appeared from the oens of Doctors Pearson and Jenner upon the cause and effects of the Variola Vaccina , or U > iv-pox . Their object is to root out the Small-pox , a disease which has wept away an immensel y greater number of victims from the world than ( lie amount of all that have been destroyed by the plague or pestilence . - Opinions are not agreed as to the ori gin of this disease in cows ; some supposing that it binfection
they get y from men milking them , who have been Previously applying dressings to the heels of horses affected with the grease ; wiule others , with more probability , consider it as being in the first instance compounded m the animal ceconomy of the cow ; after which , it may be conveyed to any number ( in an obvious way ) by the hands ofthe milkers , as « e seat ot the disease is m the breast and teats , which are covered with 'uptions similar to the small-pox . But its origin is of no importance —its "PPHcation to the benefit of
mankind is what demands the greatest attention , it is a singular fact , that it has been long known by country farmers and 'iw-s that this disease , which in several counties prevails at ' particular j W > ns among tlie cows , and is often communicated to the hands of the "Wi's , exempts such as have been so infected from being infected uith i ,, l , l " . pox' If 1 S "" ll . more singular , that though they knew this fair , ' also that no cow" or human being hadever been known to die ofthe cow-VOL . XI . 3 H