IRELAND. 



277 



of Fahrenheit The following are the results of a series 

 of experiments made by Mr. Hamilton, to ascertain the 

 temperature of the foil of Ireland, from its southern to 

 its northern coast, by examining the temperature of 

 covered wells of pure water. 



1. Mean Temperature of the Sea Coast of Ireland, observ- 

 ed in different latitudes. 



Stale of the Thermometer at Londonderry, from the 

 Year 1795 to 1801, both inclusive. 



Statistics. 



At London- 

 derry. 



. 5o 12'. Mean temperature of the northern 

 coast of Ireland, near the town of 

 Ballycastle, observed in 1788, by 

 means of copious springs flowing 

 from limestone soil ......... 48* 



I-at 54* 48'. Mean temperature of the island of 

 Enniscor, one of the Rosses islands, 

 on the western coast of Ireland, ob- 

 served by means of a covered well in 

 granite rock ; the maximum of 

 temperature taken in 1787, the mi- 

 ninuira in 1788 .......... 48.6 



I .at. 53* 20'. Meantemperatureoftheeasterncoast 

 of Ireland, near Dublin, observed by 

 means of deep covered wells, in soils 

 of clay, gnvel, and limestone, 1788 49.4 



Lat 51* 54'. Mean temperature of the south coast 

 of Ireland, near the city of Cork, ob- 

 served by means of deep covered well*, 

 in limestone and other soils, 1788 51.2 



IB pUn* 2. Mean Temperature of Placet distant from the Sen, and 

 hum fnsa titrated above it* Surace. 



State of the Thermometer at Belfast from the Year 

 1796 to 1809, both inclusive. 



Belfast. 



Lai. 53*. Mean tem 



I r,.-' , 

 ..-..: i; . 



iperature in the neighbour- 

 hood of Londonderry, distant 20 

 Irish miles from the northern sea, 

 and at a supposed elevation of 100 

 feet above it, 1788 46 3 -9 



I-at 54* 2O'. Mean temperature in the neighbour* 

 hood of Armagh, distant 25 miles 

 from the Irish Channel, and elevated 

 about 58 feet above the coast, by 

 means of a well 60 feet deep, sunk 

 to the bottom of a gravelly hill, 1788 47.5 



Lat. 53* 18'. Mean temperature derived from the 

 maximum of 1 787, and the minimum 

 of 1788, in the neighbourhood of 

 Tullamore, King's County, near the 

 centre of the kingdom, distant 50 

 miles from both the seas, and elevated 

 806 feet above the coast, in a level 

 country, which may be counted the 



3. Mean Temperature in Cities. 

 Mean temperature in different parts of the 



city of Londonderry, by maximum of 1787, 



and minimum of 1788, various, from . . 47*.G to 49* 

 Mean temperature in different parts of the 



city of Dublin, in 1788 50 to 58* 



Mean temperature in different parts of the 



city of Cork 52.5to53.5' 



CompmratsM Heat of the several Seasons, in London and 

 Dublin. 



In London. In Dublin. 

 itcr . . . 1.00 



Spring . . 3.00 . 2.14 



5.00 . 4.68 



3.00 . 3.80 



At Kilkenny, the thermometer during winter sel- Kilkenny, 

 dam sinks below the freezing point ; and during the 

 summer it seldom rises above 79' in the shade. It has 

 been observed as high as 84. The average heat of 

 summer is between 70 and 75. At Limeric, the 

 greatest height of thermometer in the shade is 72" ; the 

 greatest depression 58. In winter, it is under 55, but 

 never below 28. 



Stale of Ike Thermometer al Dublin, from 1792 to 

 I 80V, inclusive. 



Dublin. 



Acccording to Dr. Rutty, the range of the thermo- 

 meter in Dublin is about 36. The medium atmosphe- 

 rical heat of five years, viz. 179*, 1796, 1707, 1799t 

 and 1800, was 50. 15 pi us; the maximum is 81.50; and 

 the minimum was 14.50. 



