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The Rev. H. Lloyd on the Meteorology of Ireland. 



to see how far they accord with those of other observers. I have selected for 

 this purpose the results of the observations with Lind's anemometer, made 

 at Portrush and Donaghadee by two of the best of the coast-guard- observers, 

 and have placed my own beside them, for comparison. The results, converted 

 into pressures (expressed in pounds on the square foot), are contained in the 

 following Table. The numbers in the last column are the calculated pressures, 

 deduced from the formula 



P=P,n\ 



n being the number of the term of the scale, and P, (= 0'30) the pressure cor- 

 responding to the first term. 



Table XXII. Observations of the Pressures of the Wind cobrespondikg to the 



Terms of the Scale (0 - 6). 



It will be seen, that the differences of the corresponding numbers at the 

 three stations are small, and that their means agree very well with the calculated 

 pressures. It seems therefore to be fully proved, that the velocity of the 

 wind may be estimated to six degrees, by practised observers, with sufficient 

 accuracy. 



The following Table contains the monthly means of the observed wind- 

 force, in the terms of the prescribed scale. At Buncrana and Westport the 

 force appears to have been over-estimated; at the other stations it seems to 

 have been correctly observed: — 



