mr. a. w. preston’s meteorological notes. 91 
visitation as was experienced this month. After the 18th the 
weather was milder, with a good deal of rain, and but little 
sunshine. Vegetation was very late in making a start, the 
country, at the close of the month, presenting the barren 
appearance of mid-winter. A remarkable feature was 
the exceedingly low atmospheric pressure which ’prevailed 
throughout the month, the mercury not once touching 
30 ins. The mean pressure for the month (29.51 ins.) 
appears to have been the lowest in this neighbourhood for 
over 60 years. 
April. 
This was a dry, bright month, with warm days and cold 
nights, and a great abundance of sunshine. The first ten 
days were rainless, and the thermometer exceeded 60 degrees 
on 13 days, and on the nth reached 70 degrees. Frost 
occurred on 15 nights, and the diurnal range of temperature 
was generally very large. Some snow fell on the 29th and 
30th, but the falls were trifling, when compared with the 
snowfalls of the last week of the previous April. A very 
severe thunderstorm passed over Norwich and neighbourhood 
on the afternoon of the 27th, doing considerable damage, 
but was not of long duration. In Norwich this was by far 
the most severe thunderstorm of the year, and at Yarmouth 
the spire of the parish church was set on fire by the lightning 
on this day. Vegetation was much accelerated by the sun- 
shine of this month. 
May. 
May opened with a snowstorm, and morning frosts were 
frequent until the 19th day, that on the 16th surpassing any 
in May for many years past. The third week was very warm, 
the shaded thermometer reaching 80.4 degrees on the 22nd, 
a degree not again reached during the summer till August 7th. 
There was a great prevalence of bright sunshine throughout 
the month. 
June. 
This month presented but few summer-like features. 
With a mean temperature 4.2 degrees below the average 
