May 1901.] BOTANICAL SOCIETY OF EDINBURGH 



73 



And now it may be interesting to show the different 

 results given by the three different attempts to solve this 

 problem, calling them A, B, and C ; C being the net totals 

 of Table I., and A and B similar net totals of the Tables 

 embodying the erroneous work — 



RESULTS OF THREE SETS OF CALCULATIONS. 

 Evergreens. 



Over- 

 Averages 



Under- 

 Averages. 



Deciduous. 



Over- 

 Averages 



Under- 

 Averages. 



And now, quite disregarding the erroneous A and B, 

 C shows us broadly that a good growth of evergreens is 

 accompanied by a low maximum thermometer. This is 

 doubtless due to the cooling of the air by rain. It is also 

 accompanied by a high minimum thermometer, most likely 

 attributable to the absence of frosts during rainy times ; by 

 a considerable plus rainfall, averaging more than 0'22 inch 

 per hour ; and, by a lack of sunshine, amounting to twice 

 as many hours as there were plus hours of rain. 



