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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 
