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houses round the coast, directing them to give the required aid in 

 the meteorological observations. The situation of the light-houses 

 being generally elevated and exposed, co-operation in the tidal ob- 

 servations was deemed impracticable. As the result of this nego- 

 ciation, meteorological observations are now carried on, on the plan 

 laid down by the Council, at the light-houses of Killough, in the 

 county of Down, Killybegs, in the county of Donegal, and Inish- 

 gort, in the county of Mayo. 



Concurrently with these arrangements, the necessary instruments 

 were ordered from Mr. Yeates and Mr. Dobbyn, the details of their 

 form and construction having been previously considered by the 

 Committee, and the estimates for their cost submitted to the Council 

 and approved of. They were completed in the beginning of July 

 last, and were soon after forwarded to the stations then agreed upon, 

 all the thermometers having been previously compared with the 

 standards belonging to the Dublin Magnetical Observatory. The 

 tubes required for the tide-gauges being of considerable dimensions, 

 and these dimensions being necessarily different in different locali- 

 ties, it was thought advisable that they should be constructed at 

 the stations. Directions for their construction were, in consequence, 

 prepared, and a printed copy forwarded to each station. 



In the months of September and October all the stations then 

 agreed on were visited, on the part of the Committee, by Dr. Lloyd, 

 Mr. Haughton, and Dr. Apjohn, for the purpose of superintending 

 the erection of the instruments, and of instructing the observers in 

 their use. The visitors likewise conveyed, by hand, the barometer 

 tubes (previously filled with care), to the several stations, mea- 

 sured the heights of the cisterns, and compared the instruments, 

 when erected, with the standard barometer of the Dublin Magneti- 

 cal Observatory, by means of good portable barometers. They also 

 measured the differences of level between the zeros of the tide- 

 gauges and the Ordnance bench-marks, where such existed in the 

 locality. 



In the end of December the recently added coast-guard stations 

 of Cushendall and Bunown, and the light-houses of Killough and 

 Inishgort, were, in like manner, visited by Dr. Lloyd, Mr. Haugh- 

 ton, and Mr. Galbraith, and were soon after in full operation. The 



