652 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



others directly from the Wisley observations. In the following diagrams 

 these average values are indicated by dotted lines. 



Diagram 1 shows the general character of the weather of the year as 

 regards temperature and rainfall. The departures in excess from the 



Diagkam 2. — Variations from the Average of the Mean Maxima and the 

 Mean Minima Temperatures of the' Air for each Month of the Year 

 1904. 



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Fig. 202. 



The average maximum and minimum air temperatures are shown by the 

 thin dotted lines. 



average temperature were greatest in April and July, and to a less extent 

 in May and December. In September and in November the means are 

 shown to be below the average. June was again slightly cooler than is 

 usual, but not to nearly the same extent as was the case in June of the 

 preceding year. 



