METEOROLOGICAL OBSERVATIONS MADE AT CHISWICK IN 1901. 807 



Diagram 1.— This diagram (fig. 337) shows at a glance the general 

 character of the weather of each month of the year under discussion as 

 regards temperature and rainfall. For instance, it will be seen that there 

 were only three months — February, March, and November — which were 

 in any way unseasonably cold. On the other hand, there occurred only 

 one month, July, of exceptional warmth. Then, as regards rainfall, it 

 will be noticed that in only three months — March, April, and December 

 — did the rainfall exceed the average. All the other months of the year 



DIAGRAM LJ^ar/a/zfi/i frmi awra^e i/i^7nean teTT^eralure and nii/i/kll for 

 ear/i monlh duizn^f Ifie Year 19 Ol 



Average or 



seasonable 

 Temperature 



Average or 



seasonable 



BaiufalL 



Fig. 337. 



were more or less unseasonably dry, including that remarkable series of 

 seven consecutive dry months, May to November. 



Diagram 2. — Here (fig. 338) the most noteworthy feature is the unusual 

 warmth of the weather in July during the daytime. In February and 

 November the night temperatures will be seen to have been as unseason- 

 ably cold as those during the daytime. In March, although the days 

 were very cold, the night temperatures proved in no way exceptional. 



Diagram 3. — It will be noticed (fig. 839) that in the coldest month, 

 February, the soil at 4 feet deep was on an average as much as 8 degrees 

 warmer than the air, at 2 feet deep 4 degrees warmer than the air, and 

 1^ degrees warmer than the air at 1 foot deep ; whereas in the warmest 



