275 
unavoidable conditions of the spot where the gauge is fixed, the 
surrounding buildings intercepting a certain quantity from being 
received into it. 
It may be convenient for future reference to tabuiate the above 
results of the comparative observations at Ensleigh and the 
Institution Gardens, as under :— 
Results of three years’ Comparative Observations. 
Ensleigh. Institution. 
Mean Temperature of the air. . . | 48°.7 —]|— 51°.6 
Mean of all the Maxima . A : 57°. —|— 58°.0 
Mean of all the Minima Z : . | 41%°5 —|1— 43°9 
Mean Daily Range of Temperature : 15°.6 —|— 14%1 
Mean Temperature of the Dew-point . | 44°9 —|— 46°.8 
Mean Depression of the Dew-point below the 
temperature of the air 3 ‘ 3°.8 —|— 4°.8 
Rain-fall :—whole amount collected pee 33 
months . 91.4 inc.|] — 89. 8 inc. 
No. of days on which rain fell aie. the 
whole period 438 —|— 460 
It was necessary to work out these details with closeness in 
order to get if it were only an approximation to the true 
conditions of climate on the hills round Bath as compared with the 
bottom of the town, the period of the contemporaneity of the ob- 
servations, by which those conditions had to be estimated, being 
so limited. And I think they are sufficient to establish this 
conclusion, that, irrespective of any difference in the quality of the 
air, of which more presently, the hills are most to be recommended 
for summer residence, the high temperatures at that season not 
being greater, or indeed very different from what they are in the 
town, while the mean temperature is less ; but that the town is 
to be preferred in winter as both warmer and drier at that period 
_ of the year, with a more limited range of temperature,—the night 
