bo A COMPARISON BETWEEN THE 



^Malvern has long been celebrated as a remarkably healthy spot ; 

 and it is true that many persons experience a very great improve- 

 ment in their health when sojourning in it. 



That its salubrity does not depend upon any of those meteorolo- 

 gical phenomena embraced in the foregoing comparison must be 

 sufficiently obvious, when we find so little difference in them at the 

 two places, Malvern and London. 



The greatest variation in the maximum of the thermometer at the 

 two places was during the month of June, when the difference was 

 10.^; in the minimum the greatest difference was in September, 6.° 



In the maximum dew-point, the greatest difference was 7-*^ and 

 in the minimum 11.* 



Now, in the same place, the variations in the maximum tempera- 

 ture and dew-point are sometimes much greater in a comparison of 

 two successive days, — amounting to from 10, 15, or even so much 

 as 20 degrees in the former, and 10, 15, or 17 degrees in the latter; 

 so that, throughout the year, there is not any thing like so great a 

 difference, at any period, in the temperature either of the air or va- 

 pour, between Londoji and Malvern, as there is sometimes at either 

 place betpjeen one day arid another. 



Nor do the other phenomena — atmospheric pressure, wind, or 

 rain — offer any materials to account for differences in the salubrity 

 of these or other moderately distant places. 



In concluding this communication, we would say a few words 

 upon the best method of keeping a useful Meteorological Register, 

 and upon the instruments used for the purpose. To persons ac- 

 tively engaged in the duties of a business or profession, and who can 

 be supposed to devote but little time to these pursuits, the following 

 is the mode we would recommend: at nine o'clock a. m., a little be- 

 fore or a little after, the first observation for the day is to be made» 

 and noted in any common quarto book kept for the purpose, in the 

 following manner — 



