No. IV. Additional.
Table for Reducing the Degrees of Reaumeur's Thermometer into its corresponding Degrees of Fahrenheit's Scale.
| R. | F. | R. | F. | R. | F. | R. | F. | ||||
| 0 | = | 32 | 21 | = | 79.25 | 41 | = | 124.25 | 61 | = | 169.25 |
| 1 | = | 34.25 | 22 | = | 81.5 | 42 | = | 126.5 | 62 | = | 171.5 |
| 2 | = | 36.5 | 23 | = | 83.75 | 43 | = | 128.75 | 63 | = | 173.75 |
| 3 | = | 38.75 | 24 | = | 86 | 44 | = | 131 | 64 | = | 176. |
| 4 | = | 41 | 25 | = | 88.25 | 45 | = | 133.25 | 65 | = | 178.25 |
| 5 | = | 43.25 | 26 | = | 90.5 | 46 | = | 135.5 | 66 | = | 180.5 |
| 6 | = | 45.5 | 27 | = | 92.75 | 47 | = | 137.75 | 67 | = | 182.75 |
| 7 | = | 47.75 | 28 | = | 95 | 48 | = | 140 | 68 | = | 185 |
| 8 | = | 50 | 29 | = | 97.25 | 49 | = | 142.25 | 69 | = | 187.25 |
| 9 | = | 52.25 | 30 | = | 99.5 | 50 | = | 144.5 | 70 | = | 189.5 |
| 10 | = | 54.5 | 31 | = | 101.75 | 51 | = | 146.75 | 71 | = | 191.75 |
| 11 | = | 56.75 | 32 | = | 104 | 52 | = | 149 | 72 | = | 194. |
| 12 | = | 59 | 33 | = | 106.25 | 53 | = | 151.25 | 73 | = | 196.25 |
| 13 | = | 61.25 | 34 | = | 108.5 | 54 | = | 153.5 | 74 | = | 198.5 |
| 14 | = | 63.5 | 35 | = | 110.75 | 55 | = | 155.75 | 75 | = | 200.75 |
| 15 | = | 65.75 | 36 | = | 113 | 56 | = | 158 | 76 | = | 203 |
| 16 | = | 68 | 37 | = | 115.25 | 57 | = | 160.25 | 77 | = | 205.25 |
| 17 | = | 70.25 | 38 | = | 117.5 | 58 | = | 162.5 | 78 | = | 207.5 |
| 18 | = | 72.5 | 39 | = | 119.75 | 59 | = | 164.75 | 79 | = | 209.75 |
| 19 | = | 74.75 | 40 | = | 122 | 60 | = | 167 | 80 | = | 212 |
| 20 | = | 77 |
Note—Any degree, either higher or lower, than what is contained in the above Table, may be at any time converted, by remembering that one degree of Reaumeur's scale is equal to 2.25° of Fahrenheit; or it may be done without the Table by the following formula, R × 9 / 4 + 32 = F; that is, multiply the degree of Reaumeur by 9, divide the product by 4, to the quotient add 32, and the sum is the degree of Fahrenheit.—E.