Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
Experiments Illustrating The Properties Of Charcoal.
crystals , which , according as the weather is warmer or colder , will alternately disappear and re-appear . 19 . Though honey boiled with charcoal is thereby deprived of its peculiar smell and taste , and also of its colour and slimy parts , yet if it is farther evaporated , after the separation of the charcoal powder , it again recovers its brown colour .
_ 20 . . By trituration with charcoal powder , bugs were entirely deprived of their bad smell . ' 21 / Sp irits distilled from malt or other grain , shew by the smell evidently that their strength is much increased by purification with charcoal , without the help of distillation , insomuch that persons who were not informed of the manner in which the purification was
effected have taken such spirits for rectified spirit of wine . 22 . Relative to the mode of purifying ardent spirits by means of charcoal without distillation , and the time which the charcoal powder , added in-different proportions , requires before it completely settles , I have made the following observations : I divided ten pounds of ardent spirits into ten equal portions , and added charcoal powder in the following increased proportions : Half a dram of charcoal powder produced scarcely any alteration in the smell , and the spirits had not become quite clear even after six
months . One dram occasioned hardly any perceptible diminution of the smell , and the spirit did not become clear till after the space of four months . With two drams the spirit became clear in two months . Four drams occasioned a very perceptible diminution of the smell , and the powder completely settled in the course of a month . One ounce entirely took off the bad smell , and the spirit became
clear in a fortnight . With an ounce and a half the spirit cleared in eight days . With two ounces in six days . ... With three ounces in five da 3 * s . With-fotir ounces iii twenty-four hours . And with five ounces in two hours . The proportion of charcoal
powder could not be farther increased , on account of the thickness which the mixture acquired . It is remarkable , that ardent spirits which have been completely purified by means of charcoal , give out a fine odour exactty resembling that of peaches . 23 The author found alsothat by means of charcoal powder he
. , could completely purify a naturalty dark brown resin . - He rendered the resin of jalap as white as milk , without its losing any of its peculiar smell ; the process , however , is somewhat tedious . 24 . Empyreumatic oils , dissolved in a sufficient quantity of highly rectified spirit of wine , are entirely deprived of their colour and smell by charcoal .
2 ; . Distilled waters are rendered completely inodorous by treatment with charcoal powder . If to any of these distilled waters only just so much charcoal powder be added as will suffice for destroying the smell , the water will always remain turbid ; but when a larger
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
Experiments Illustrating The Properties Of Charcoal.
crystals , which , according as the weather is warmer or colder , will alternately disappear and re-appear . 19 . Though honey boiled with charcoal is thereby deprived of its peculiar smell and taste , and also of its colour and slimy parts , yet if it is farther evaporated , after the separation of the charcoal powder , it again recovers its brown colour .
_ 20 . . By trituration with charcoal powder , bugs were entirely deprived of their bad smell . ' 21 / Sp irits distilled from malt or other grain , shew by the smell evidently that their strength is much increased by purification with charcoal , without the help of distillation , insomuch that persons who were not informed of the manner in which the purification was
effected have taken such spirits for rectified spirit of wine . 22 . Relative to the mode of purifying ardent spirits by means of charcoal without distillation , and the time which the charcoal powder , added in-different proportions , requires before it completely settles , I have made the following observations : I divided ten pounds of ardent spirits into ten equal portions , and added charcoal powder in the following increased proportions : Half a dram of charcoal powder produced scarcely any alteration in the smell , and the spirits had not become quite clear even after six
months . One dram occasioned hardly any perceptible diminution of the smell , and the spirit did not become clear till after the space of four months . With two drams the spirit became clear in two months . Four drams occasioned a very perceptible diminution of the smell , and the powder completely settled in the course of a month . One ounce entirely took off the bad smell , and the spirit became
clear in a fortnight . With an ounce and a half the spirit cleared in eight days . With two ounces in six days . ... With three ounces in five da 3 * s . With-fotir ounces iii twenty-four hours . And with five ounces in two hours . The proportion of charcoal
powder could not be farther increased , on account of the thickness which the mixture acquired . It is remarkable , that ardent spirits which have been completely purified by means of charcoal , give out a fine odour exactty resembling that of peaches . 23 The author found alsothat by means of charcoal powder he
. , could completely purify a naturalty dark brown resin . - He rendered the resin of jalap as white as milk , without its losing any of its peculiar smell ; the process , however , is somewhat tedious . 24 . Empyreumatic oils , dissolved in a sufficient quantity of highly rectified spirit of wine , are entirely deprived of their colour and smell by charcoal .
2 ; . Distilled waters are rendered completely inodorous by treatment with charcoal powder . If to any of these distilled waters only just so much charcoal powder be added as will suffice for destroying the smell , the water will always remain turbid ; but when a larger