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50
A NEW FLORA OF
we have added for comparison the figures for York, Greenwich, and Helston during the same period.
- MEAN TEMPERATURES IN THE SHADE.
| Helston. | Greenwich. | York. | Bywell. J. Dawson |
Allenheads. T. Bewick |
N. Shields R. Spence. |
Alnwick. Mr. Scott. | |
| January | 44.1 | 38.4 | 37.3 | 37.3 | 33.1 | 37.2 | 37.5 |
| February | 44.1 | 38.9 | 38.1 | 38.5 | 33.9 | 38.1 | 38.0 |
| March | 45.3 | 41.2 | 39.2 | 39.6 | 34.7 | 38.4 | 39.2 |
| April | 50.9 | 49.5 | 47.9 | 46.6 | 42.1 | 43.9 | 44.9 |
| May | 54.1 | 54.3 | 52.1 | 51.5 | 46.9 | 48.6 | 49.0 |
| June | 57.2 | 58.0 | 56.8 | 55.4 | 51.5 | 52.8 | 52.4 |
| July | 60.6 | 61.4 | 59.8 | 58.4 | 53.7 | 57.2 | 52.4 |
| August | 60.0 | 60.2 | 57.1 | 57.3 | 52.2 | 55.4 | 54.0 |
| September | 58.6 | 58.0 | 54.9 | 55.7 | 50.6 | 53.3 | 52.4 |
| October | 54.1 | 51.2 | 49.1 | 49.2 | 44.2 | 47.3 | 47.4 |
| November | 47.3 | 43.1 | 41.3 | 42.0 | 37.7 | 41.9 | 40.5 |
| December | 46.9 | 41.9 | 41.9 | 42.6 | 37.5 | 41.8 | 41.2 |
| Mean of the Year | 51.9 | 49.7 | 48.0 | 47.8 | 43.2 | 46.3 | 45.7 |
Reckoning by seasons instead of months, taking December, January, and February as winter, and the others in order from this as a starting point, we obtain the following result:—
MEAN TEMPERATURE OF THE FOUR SEASONS.
| Helston. | Greenwich. | York. | Bywell. | Allenheads. | North Shields. | Alnwick. | |
| Winter | 45.0 | 39.4 | 39.1 | 39.5 | 34.8 | 39.0 | 38.9 |
| Spring | 50.1 | 48.3 | 46.4 | 45.9 | 41.2 | 43.6 | 44.4 |
| Summer | 59.3 | 59.9 | 57.9 | 57.0 | 52.5 | 55.1 | 52.9 |
| Autumn | 53.3 | 50.8 | 48.4 | 49.0 | 44.2 | 47.5 | 46.8 |
| Difference between Winter and Sumner | 14.3 | 20.5 | 18.8 | 17.5 | 17.7 | 16.1 | 14.0 |
In the first place, comparing Bywell with Allenheads, we see that the difference, season by season, is 4.7, 4.7, 4.5, and 4.8 for a difference in level of 1300 feet, which quite bears out what we said before, that to speak in round numbers, we may reckon that
