Results of Meteorological Observations at Wick. 339 



which the investigation is now brought, we may shortly ex- 

 pect the most decisive proof of its just effect. I am, Sir, &c. 

 Edinburgh, Jan. 21, 1827. Wm. Galbkaith. 



P.S. I have since found that the coefficients to the formula 

 may vary on account of the different states of the atmosphere. 

 The quantity by whicli the formula of Newton before extract- 

 ing the root should be multiplied, may vary from 1*3 to 1*5, 

 making that adopted lately by M. Laplace, or 1-4, the mean. 

 Therefore 1*3 must be the quantity in very dry air, l*^ in 

 moist, and \'5 in very damp. 



Hence my coefficients should be 



Dry ... 103") instead of 104.-0885, 

 Moist . . 106 V or even 105-9518. 

 Damp . . 109 j 

 I have come to these conclusions in the mean time, but shall 

 return to the subject at some convenient opportunity. W. G. 



LXVI. Results of the Meteorological Observations made at 

 IVick in the tiorthernmost part of Scotland, published in the 

 Philosophical Magazine. By W. Burney, LL.D. 

 To the Editors of the Philosophical Magazine and Annals of 



Gentlemen, Philosophy. 



"VrOU have inserted in your Magazine and Annals, two ar- 

 -*- tides containing Meteorolofjical Observations made at 

 Wick, in the county of Caithness, in the years 1823 and 1825; 

 and as no observations of this kind have been sent to you be- 

 fore from that remote part of Scotland, I have thought their 

 results would be acceptable to those of your readers who are 

 interested in meteorology, ,by the way of comparison; and 

 have therefore made up their results in two concise tables, with 

 occasional remarks. Seeing some discrepancies in the results 

 of the first article, and knowing that you are very correct in 

 printing, 1 was induced to go over tlie calculations for accu- 

 rate results of the monthly tables; the differences, however, are 

 not considerable. I have also added a scale of the prevailing 

 winds; and to the mean monthly temperatures at 10 A.M. 

 and 10 P.M., I have applied corrections, which are the differ- 

 ences between the monthly mean temperatures at 10 A.M. 

 and 10 P.M. at Kinfauns Castle, North Britain; and the 

 monthly mean temperatures by a Six's thermometer at that 

 place for 1823, being the nearest to Wick, where a register of 

 tlie weather was kept at the same hours of observation. The 

 application of these differences as corrections to tiie monthly 

 mean temperatures at Wick at 10 A.M. and 10 P.M., ought 

 to make the averages nearly as correct as if a Six's thermo- 

 meter had been used tliere for that purpose. 



2X2 Results 



