# An Extract from the Thermometrical Observations Made by Mons. Demidoff at Solikamsky on the Borders of Siberia, Latit. 59, in the Year 1751, by a Thermometer Adapted to Mons. De L'Isle's Scale, Which, in This Extract, are Reduced Likewise to Those of Fahrenheit and Mons. Reaumur; By the Right Honourable George Earl of Macclesfield, Press. R. S.

**Author(s):** Honourable George, Mons. Demidoff  
**Year:** 1753  
**Journal:** Philosophical Transactions (1683-1775)  
**Volume:** 48  
**Pages:** 2 pages  
**Identifier:** jstor-105129  
**JSTOR URL:** <https://www.jstor.org/stable/105129>  

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Read March 8, 1753.

XV. An Extract from the thermometrical Observations made by Mons. Demidoff at Solikamsky on the Borders of Siberia, Latit. 59°, in the Year 1751, by a Thermometer adapted to Mons. De l'Isle's Scale, which, in this Extract, are reduced likewise to those of Fahrenheit and Mons. Reaumur; by the right honourable George Earl of Macclesfield, Pres. R. S.

| Month   | Highest | Lowest | At a Medium |
|---------|---------|--------|-------------|
| January | 20 day 0½ p.m. | 31 day 7½ mane | 162 17.6 |
|         | 200 28.6 | 178 2.0 | 640 6.40 |
|         |          |        | 2693 26.93 |
|         |          |        | 1511 15.11 |
| February| 28 day 0½ p.m. | 13 day 7½ mane | 149 33.2 |
|         | 186 11.2 | 169 8.6 | 053 0.53 |
|         |          |        | 1920 19.20 |
|         |          |        | 1040 10.40 |
| March   | 29 day 0½ p.m. | 1 day 11 p.m. | 137 47.6 |
|         | 167 11.6 | 149 42.8 | 693 6.93 |
|         |          |        | 907 9.07 |
| April   | 30 day 0½ p.m. | 9 day 5½ mane | 120 68.0 |
|         | 166 12.8 | 141 42.8 | 1600 16.00 |
|         |          |        | 853 8.53 |
| May     | 8 day 0½ p.m. | 28 day 0½ p.m. | 118 70.4 |
|         | 157 23.6 | 135 49.4 | 1707 17.07 |
|         |          |        | 373 3.73 |
| June    | 6 at 0½ p.m. | 1 day 4 mane | 105 86.0 |
|         | 143 40.4 | 125 62.0 | 2400 24.00 |
|         |          |        | 373 3.73 |
| July    | 31 day 0½ p.m. | 29 day 4 mane | 102 89.6 |
|         | 146 36.8 | 128 58.1 | 2560 25.60 |
|         |          |        | 213 2.13 |
|         |          |        | 1160 11.60 |
| August  | 23 day 0½ p.m. | 28 day 4½ mane | 112 77.6 |
|         | 153 28.4 | 134 50.8 | 2027 20.27 |
|         |          |        | 160 1.60 |
| September| 1 day 0½ p.m. | 18 day 5½ mane | 124 63.2 |
|         | 155 26.0 | 139 45.2 | 373 3.73 |
|         |          |        | 835 8.35 |
| October | 10 day 11 mane | 11 day 0½ p.m. | 143 40.4 |
|         | 25 day 6½ mane | 26 day 11 p.m. | 169 9.2 |
|         |          |        | 1013 10.13 |
| November| 1 day 0½ p.m. | 9 day 7 mane | 154 27.2 |
|         |          |        | 213 2.13 |
| December| 16 day 0½ p.m. | 20 day 8 mane | 150 32.0 |
|         | 199 26.8 | 168 10.1 | 2613 26.13 |
|         |          |        | 973 9.73 |

De l'Isle Fahrenheit above below Reaumur above below

XVI.