r 5 ] 



atmofphere, from whence fome general laws may at length be 

 deduced. 



This method has been attempted by moft of the learned 

 focieties in Europe, though hitherto, for want of a more gene- 

 ral and permanent eftablifliment, with inconfiderable fuccefs. 



The Royal Irifli Academy has not been wanting in its duty 

 to the public and to fcience in this refpedl ; it has already 

 provided at its own coft, and difperfed through the kingdom, 

 fome of the moft ufeful and beft conftrudled inftruments ; yet 

 its wifhes have not hitherto been completely anfwered, few 

 obfervations having been communicated. Of thefe, and of my 

 own made in Dublin, I fhall now give a fummary view.. 



1789. 



Dublin lies in latitude s;^° 21. Long. 6° 5' weft of London. 



The winter months which preceded the commencement of 

 this year were remarkably dry, no rain having fallen between 

 the 3d and i8ti of November. The barometer all the time 

 flood above 30 inches ; yet the weather could not be called cold 

 until the 12th, when it grew clearer, and the thermometer at 

 night was generally under 36", the wind being moftly at E. 

 The xSth it grew milder but ftill dry, there being fcarce any 

 rain until December the 13th, the wind being E. S. E. On 

 the night of the 13th it blew a ftorm at E. S. E. with fnow ; 



after 



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