96 



in making the arrangements for the tidal observations at this sta- 

 tion. There are three piers at the town, all well sheltered ; but, 

 unfortunately, all dry at low water spring tides. The tide-gauge 

 was consequently abandoned, and two tide-poles employed in its 

 stead. One of these is fixed to the pier in the immediate vicinity 

 of the guard-house, and the other fastened to a rock at a short dis- 

 tance from the shore, the latter being used only when the base of 

 the pier is dry at low water spring tides. The term observations 

 alone are taken. The gnomon, for the time, is fixed to the sill of 

 the window in the guard-house. 



It was found advisable to separate the meteorological from the 

 tidal observations at this station, and to intrust the former to the 

 keeper of the light-house at St. John's Point, near Killybegs, the 

 permission of the Ballast Board having been previously obtained. 

 This light-house is admirably circumstanced for meteorological 

 observations. The Academy's barometer was not put up, the ba- 

 rometer belonging to the light-house being found sufficiently good ; 

 it is favourably placed in the sitting room of the light-keeper's 

 dwelling. The thermometers are in an angle of the yard at the 

 back of the house ; the rain-gauge is attached to an iron railing in 

 the front yard. There is a sun-dial in the front yard, the posi- 

 tion of which was examined, and found correct. 



Inishgort Light-house, Clew Bay (Co. Mayo). — The whole of 

 Clew Bay was examined with the intention of erecting a tide-gauge; 

 but as there is no pier in the bay which is not left dry at low water, 

 the Committee of Science were obliged reluctantly to give up tidal 

 observations at this important locality. The meteorological instru- 

 ments are erected at the light-house of Inishgort, and are in charge 

 of the keeper. The barometer belonging to the light-house was 

 found sufficiently good for the observations. It is placed, with a 

 thermometer near it, in the sitting room of the light-keeper. The 

 external thermometers and rain-gauge are erected in a favourable 

 site in the small garden attached to the light-house. 



Bcjnown Bay (Co. Galway). — The tide-gauge is erected at the 

 inner side of the new pier erected in this bay for the accommodation 

 of fishing boats. It is protected by the pier from west and south- 

 west winds, and has the advantage of deep water at the lowest 



