The Rev. H. Lloyd on the Meteorology of Ireland. 417 



wind-vaue, Lind's anemometer, a rain-gauge, and (at the coast-guard stations) 

 a thermometer adapted to the observation of sea temperature. The thermo- 

 meters were previously compared in Dublin with the standards belonging to 

 the Magnetical Observatory, and their errors exactly determined. The barome- 

 ters were compared with the Dublin standard after they were placed at the se- 

 veral stations, by means of good portable barometers ; and the heights of the 

 cisterns above the sea were ascertained by levelling. All this was done by 

 Members of the Council, under whose superintendence the instruments were 

 erected. 



The following were the positions of the instruments : — 



PoETEUSH. — The barometer was put up in the guard-house, which is situ- 

 ated on an eminence facing the harbour; and the thermometers and the rain- 

 gauge in a small attached garden. The four thermometers at this, and at 

 every other station, were inclosed in a shallow box with a sloping roof, and 

 wire-gauze front. A vertical gnomon was fixed at most of the stations in the 

 window-sill of the guard-house, for the purpose of determining the time of noon ; 

 and the observers were furnished with a Table of the equation of time computed 

 for the year 1851, and for the mean longitude of Ireland. 



DoNAGHADEE. — The meteorological instruments were favourably placed : 

 the barometer in the guard -house, and the thermometers and rain-gauge in an 

 inclosed yard connected with it. The meridian line was traced on the sill of a 

 window in the guard-house, the shadow being given by a vertical iron bar. 



KiLLOUGH. — Lighthouse, St. John's Point. — The barometer was put up in 

 tlie hall of the light-keeper's dwelling ; the other meteorological instruments 

 were well placed in a garden attached to it. The meridian line was traced on the 

 flagging, at the south side of the house, the shadow being given by a vertical 

 iron rail. 



CouRTOWN Harbour. — The barometer was erected in the guard-house of the 

 station ; the thermometers in an inclosed yard at the rear, attached to a wall 

 facing northward ; and the rain-gauge on an eminence behind it. 



DuNJiORE East. — The barometer was put up in the guard-house of the sta- 

 tion; the thermometers were attached to the northern external wall, and were not 

 completely guarded from radiation. The rain-gauge was fixed to a wall in front. 



