REPORT ON METEOROLOGICAL OBSERVATIONS AT WISLEY. 135 



March. — The weather of March was very unusual in some respects. 

 The distribution of barometric pressure was ahnost the exact opposite of 

 the normal, and this caused a continuance of very cold weather, during 



Fig. 64. — Difference from the Average of Mean Temperature (Lower 

 Half of Diagram) and of Eainfall (Upper Half) for Each Month. 



which the temperature frequently fell many degrees below the freezing- 

 pomt, and at a few places it fell below zero; generally speaking, it was 

 the coldest March experienced for many years. The rainfall also was 



