50 



A NEW FLORA OF 



we have added for comparison the figures for York, Greenwich, 

 and Helston during the same period. 



- MEAN TEMPEKATUKES IN THE SHADE. 





Helston. 



Green- 

 wich. 



York. 



Bywell. 

 J.Dawson 



Allen- 

 heads. 

 T.Bewick 



N. Shields 

 R.Spence. 



Alnwick. 

 Mr. Scott. 



January 



February ... 



March 



April 



44-1 

 44-1 

 45-3 

 50-9 

 54-1 

 57-2 

 60-6 

 60-0 

 58-6 

 54-1 

 47-3 

 46-9 



38-4 

 38-9 

 41-2 

 49-5 

 54-3 

 58-0 

 61-4 

 60-2 

 58-0 

 51-2 

 43-1 

 41-9 



37-3 

 38-1 

 39-2 

 47-9 

 52-1 

 66-8 

 59-8 

 57-1 

 54-9 

 49-1 

 41-8 

 41-9 



37-3 

 38-5 

 39-6 

 46-6 

 51-5 

 55-4 

 58-4 

 57-3 

 55-7 

 49-2 

 42-0 

 42-6 



33-1 

 33-9 

 34-7 

 42-1 

 46-9 

 51-5 

 53-7 

 52-2 

 50-6 

 44-2 

 37-7 

 37-5 



37-2 

 38-1 

 38-4 

 43-9 

 48-6 

 52-8 

 57-2 

 55-4 

 53-3 

 47-3 

 41-9 

 41-8 



37-5 

 38-0 

 39-2 

 44-9 

 49-0 

 52-4 

 52-4 

 54-0 

 52-4 

 47-4 

 40-5 

 41-2 



May 



June 





August 



September... 



October 



November . . . 

 December ... 



Mean of the 

 Year 



51-9 



49-7 



48-0 



47-8 



43-2 



46-3 



45-7 



Reckoning by seasons instead of months, taking December, 

 January, and February as winter, and the others in order from 

 this as a starting point, we obtain the following result : — 



MEAN TEMPERATURE OF THE FOUR SEASONS. 





Helston. 



Green- 

 wich. 



York. 



ByT^'^ell. 



Allen- 

 heads. 



North 

 Shields. 



Alnwick. 



Winter 



Spring 



Summer 



Autumn 



45-0 

 50-1 

 59-3 

 53-3 



39-4 

 48-3 

 59-9 

 50-8 



39-1 

 46-4 

 57-9 



48-4 



39-5 

 45-9 

 57-0 

 49-0 



34-8 

 41-2 

 62-5 

 44-2 



39-0 

 43-6 

 55-1 



47-5 



38-9 

 44-4 

 52-9 

 46-8 



Difference 

 between Win- 

 ter and Sum- 



14-3 



20-5 



18-8 



17-5 



17-7 



16-1 



14-0 





In the first place, comparing Bywell with Allenheads, we see 

 that the difference, season by season, is 4-7, 4-7, 4-5, and 4-8 for 

 a difference in level of 1300 feet, which quite bears out what we 

 said before, that to speak in round numbers, we may reckon that 



