217 
lowest has uniformly kept above 40°. In June it has fallen below 
it in four instances, getting as low as 37°.2 in June, 1872. In 
August it has fallen once below it, viz., in 1869, when it 
descended to 37°.3. 
The results given in the next Table (Table IV.), showing the 
extreme range of Temperature in each month, might easily be 
obtained by inspecting together the two previous Tables (Tables 
II. and III.): still it may be desirable for convenience to have 
them tabulated separately. 
TABLE IV. Showing the extreme Range of Temperature taken from the highest 
Maximum awd the lowest Minimum of each Month. 
Year! 
Jan. | Feb. | Mar. | April| May | June} July | Aug. | Sept. { Oct. | Nov. | Dec. Means. 
Se ee ee ee 
30.3 | 33-2 | 34-7 | 40.5 | 41-3 | 41-2 | 37-7 | 32-6 | 29.6 | 32.5 | 32.2 | 37.2 | 34.6 
47-9 | 27-3 | 34-4 | 29.6 | 47-3 | 37-4 | 35-6 | 39.6 | 39.3 | 34.5 | 37-2 | 33-7 | 369 
32-5 | 31-5 | 33:5 | 44.6 | 48-9 | 39.5 | 44-2 | 40.6 | 44.3 | 34-0 | 34-8 | 25.9 | 37-3 
29.9 | 32-7 | 25.8 | 45.3 | 32-2 | 45.8 | 42.0 | 51.4 | 36.0 | 45.2 | 33.4 | 38.2 | 38.1 
33-0 | 34-3 | 35-0 | 48.5 | 47-7 | 39-4 | 44.3 | 42-0 | 34.0 | 42.0 | 32.0 | 46.4 | 39.8 
35:3 | 25:9 | 39.0 | 30.7 | 43-4 | 33-2 | 32-2 | 40.0 | 40.2 | 33.2 | 31-0 | 30.9 | 34-5 
26.0 | 23.2 | 36.5 | 38.0 | 35.4 | 46.7 | 39.8 | 39.4 | 43-4 | 30.7 | 30.7 | 29.6 | 34.9 
28.4 | 23.6 | 36.9 | 40.0 | 37-5 | 33-7 | 42-8 } 29.2 | 33.8 | 48.5 | 29.2 | 36.0 | 34.1 
27.0 | 30.0 | 35.2 | 45.0 | 39-6 | 4x-4 | 41-4 | 36.0 | 34.2 | 27.7 | 32.0 | 38.2 | 35.5 
_-|——/~——— |__| —— | — | ——_— | — — — |__| —___|____, 
— |————]—__— 
Mans! | 32-2 | 29.0 | 34.5 | 40.2 | 40.8 | 38.6 | 39.9 | 38.8 | 37.2 | 36.4 | 32.4 | 34.4 | 36.2 
This Table and (Table V.), the next to follow, may be spoken 
of together. They are perhaps of all the Tables hitherto given 
those of most importance for determining the climate of a 
particular locality, especially with reference to invalids. For 
this inquiry, as before observed, is not satisfied by simply 
knowing its mean temperature: we must know its fluctua- 
tions of temperature. Sudden and great fluctuations quite. 
irrespective of climate no doubt at times occur everywhere. In 
unsettled weather in particular, there are often down-rushes of 
cold, due to great disturbances in the upper strata of the 
atmosphere, and causing in a very short time a considerable 
