148 PROCEEDINGS COTTESWOLD CLUB 191 3 



All these points may be seen in more exact detail in the 

 foregoing lists, which are taken from Appendix III. of the 

 weather reports of the Meteorological Ofhce for 1906, being 

 the last summary of the sort published to date. The state- 

 ment represents a series of normals averaged from the records 

 of the 35 years 1871 to 1905. The Cheltenham sunshine is 

 the local record for 10 years 1903-1912. 



But, further, in regard to the climate of any place, there 

 are other differences besides such as admit of measurement 

 and record like those set out above, and which give to places 

 situated not far apart a distinctive character that is effective 

 upon the sensibilities, well being and activity of the human 

 body. These differences become evident in any place by the 

 influence they actually exert upon us in the course of personal 

 experience. 



Altitude has an important effect, and differences in air 

 pressure can always be obtained by going up or going down a hill. 

 Position and aspect are of great importance in the exposure 

 they cause to prevaiUng winds, or in protecting from them, and 

 in increasing «r lessening the amount of possible bright sun- 

 shine, or even the daily amount of light, as in the case of a 

 town close under a high hill, which being to East or West of 

 it, puts the town into shadow some hours after sunrise or some 

 hours before sunset ; or, as in the case of a town that is entirely 

 surrounded by high hills. Exposure upon a hill side that 

 faces South may prove too hot during the mid-day hours of 

 summer, and exposure in an elevated position to a too moist 

 wind, or to a too dry wind like the South-West wind from the 

 sea, or the East wind respectively, may prove productive of 

 discomfort or ill health. The relative humidity of the atmos- 

 phere, combined with the degree of temperature, is effective, 

 a comparatively dry air, if not from the East, being more 

 pleasant and invigorating than a comparatively damp air, a 

 damp, warm air being particularly oppressive. 



The variation in the relative proportion of the component 

 gases of the air has effect upon climate, the ozonisation of 

 the air in particular being a varying factor, and in conjunction 

 with the varying humidity, probably bringing about that 



