TEMPERATURE. 151 



It is rather by warming the night hours than by cooling the 

 day hours, that the beneficial action of the sea air is apparent on 

 our littoral climate, which on the whole year is somewhat warmer 

 than the inland climate. 



We may now compare the temperature of York with that of a 

 selected number of places around it, as Durham, Newcastle, 

 Carlisle, Kendal, Manchester, Derby, Nottingham. 



Mean annual temperature. 



York. Durham. New- Carlisle. Kendal. Man- Derby. Notting- 

 1800 to 1843 to castle. 1801 to 1823 to Chester. 1846 to ham. 

 1824. 1847. 1847. 1824. 184?. 1848. 



48-2 46-4 49-2 47'4 45'2 48'8 49' 1 50-0 



Mean of the wannest year. 

 50-8 487 ... 49-0 48'9 



Mean of the coldest year. 

 447 44-8 ... 45-1 44'8 



Mean temperature of the four critical months. 



York. Durham. Newcastle. Carlisle. Kendal. Manchester. Derby. Nottingham. 



Jan. 34-8 37'5 36-9 37'6 34'9 36'9 35'1 37'5 



April 47'6 44-1 447 45'1 45*0 46-6 43-6 47'4 



July 62-0 59-4 63'8 59'2 58'6 60'2 63'9 66'4 



Oct. 48-2 46-5 50*4 484 47'4 50'5 507 48-5 



Temperature of the hottest part of the day on the average of the year. 



York. Durham. Derby. 



52-9 52-8 57-3 



On the warmest day. 

 84-0 84-5 81-0 



On the coldest day. 

 19-0 27-0 32-0 



Temperature of the coldest part of the night on the average of the year. 

 40-9 41-1 40-8 



On the coldest night. 

 0-5 14-0 11-0 



On the warmest night. 

 65-0 62-3 62-0 



The results which have now been stated relate to the tempe- 

 rature of the air at elevations not greatly above the level of the 



