The London dispensatory, containing: I, the elements of pharmacy; II, the botanical description ... and medicinal properties, of the substances of the materia medica; III, the pharmaceutical preparations and compositions of the pharmacopoeias of the London, Edinburgh, and Dublin Colleges of Physicians / By Anthony Todd Thomson.
- Thomson, Anthony Todd, 1778-1849.
- Date:
- 1836
Licence: Public Domain Mark
Credit: The London dispensatory, containing: I, the elements of pharmacy; II, the botanical description ... and medicinal properties, of the substances of the materia medica; III, the pharmaceutical preparations and compositions of the pharmacopoeias of the London, Edinburgh, and Dublin Colleges of Physicians / By Anthony Todd Thomson. Source: Wellcome Collection.
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![must be multiplied by 9, and divided by 4, adding 32 to the uotient. In De Lisle’s thermometer, which is used only in Russia, the space between the boiling and freezing points is divided into 150°, the gradation beginning at the boiling point, which is marked 0; and increasing inversely to the freezing point, which is marked 150°. It is seldom mentioned by authors. TABLE ‘showing the degrees of Reaumur’s and Fahrenheit’s thermometers corresponding with those of the Centigrade thermometer. Cent.|Reau.| Fahr.|| Cent.|Reau.| Fahr.|| Cent.) Reau.| Fahr.|| Cent.|Reau.| Fahr. 100 | 80° /212: 68 | 54°4|154-4 36 | 28°8| 96°8 5 4¢ | 41° 99 | 79°2/210°2 67 | 53°6 |152°6 35 4 28 jn 95: 4 $°2| 39°2 98 | 78°4/208°4 66 | 52°8|150°8 || 34 | 27:2) 93°2 3 2°4| 37°4 97 | 77°6 |206°6 65 | 52° |149> 33 | 26°4| 91°4]| 2 1°6| 35°6 96 | 76°8/204°8 64 | 51°2|147°2 32 | 25°6| 89°6 1 0°8| 33°8 95 | 76* |203° 63 | 50°4/145°4 31 | 24°8| 87°8 O O: | 32° 94+) 75°2)|201°2 62 | 49°6 |143°6 SO | 24°: | 86 1 0°8} 30°2 93 | 74°4|199°4 61 | 48°8 |141°8 29 | 23°2| 84-2 2 1°6| 28°4 92 | 73°6|197°6 60 | 48° |140° 28 | 22:4) 82°4)| 3 2°4| 26°6 91 | 72°8|195°8 59 | 47°2|138°2 27 | 21-6| 80°6 4 $°2| 24°8 90 | 72° |194- 58 | 46°4 |136°4 26 | 20-8] 78°8}) 5 EA | 25° 89 | 71°2}192-2)- 57 | 45°6 |134°6 fk. - 25 | 20° |: 77 6 4°82 2 88 | 70°4}190°4]| 56 | 44°8/132°8 24 | 19°2| 75:2 7 5°6| 19°4 87 | 69°6|188°6 55 | 44~ |181° 23 | 18-4] 73°4}| 8 6°4| 17°6 86 | 68°8|186°8 54 | 43°2/129°2 22:1.17°6| 716 9 7:2) 15°8 85 | 68° {185° 53 | 42°4/127°4 21 | 16°8; 69°38} 10 84 | dia: 84 | 67°2|183°2 52 | 41°6/125°6 || 20 | 16> | 68: 1] 8°8 | 122 83 | 66°4|181°4 51 | 40°8 |/123°8 19 } 15°2| 66°2|| 12 9°6| 10°4 82 | 65°6 |179°6 50 | 40° |122: 18 | 14:4} 64-4]] 13 10°4| 86 81 | 64°8|177°8 49 | 39°2 |120°2 17 | 13°6| 62°6|| 14 11*2| 68 80 | 64: |176: 48 | 38°4/118°4 16 | 12°8! 60°8}| 15 12 5 49 (6S°2 |\1'74°2 47 | 37°6 |116°6 15 12° 259° 16 12°8 | » 3:2 78 | 62°4|172°4 46 | 36°8 |114°8 Pri {r srs 17 13°6| 1°4 77 | 61°6|170°6 45 | 36° {113° 13 | 10°4| 55°4]| 18 14*4| 04 76 | 60°8 |168°8 44 | 35°2/111°2 12 9°6| 53°6}} 19 15°2| 2:2 75 | 60° |167° 43 | 34-4 |109°4 11 8°8} 51°8}| 20 16° 4 74 | 59°2|165-2 42 | 33°6|107°6 10 73 | 58°41163°4|| 41 | $2°8/105°8 2 72 | 57°6|161°6 40 | 32° |104: 8 71 | 56°8/159°8 39 | 31°2/102°2 7 1p oO TLaa* 38 | 30°4|100°4 6 69 | 55°2|156°2 37 | 29°6| 98°6 4 . *6| 44°6]|/ 24 19:2} 11°2 8| 42°8|| 25 ZO ey, 13° These instruments are well adapted for determining the variations of temperature which bodies undergo: but a cer- tain degree of fallacy attends the observations made with them, chiefly owing to the expansion of mercury increasing with the temperature. Thus, the medium degree of heat be- tween the freezing and boiling points, although marked on the scale 122°, yet is actually 118°8° 1’ only; the temperature which is equal to raise the mercury in the tube 86° in the first instance, being sufficient, by increased expansion, to raise it 94° in the second. c 3](https://iiif.wellcomecollection.org/image/b29336995_0041.jp2/full/800%2C/0/default.jpg)