METEOROLOGICAL 1%5 
3. That there is a constant difference in the observations 
taken in the morning and afternoon, averaging for the whole 
period a decrease of 0.05 height in the afternoon. 
4, That the difference between the average of maximum and 
minimum observations in the ten years has fluctuated between 
0.25 and 0.46. 
Thermometer. 1. That the four months, June to Septem- 
ber, are the hottest, and of nearly equal temperature, viz. : 88°. 
2. That January, February and March are the three coldest 
months, and of nearly equal temperature, viz.: 66°. 
3. That the greatest maximum heat exceeds the average heat 
by not more than 12°, and that the greatest mimimum falls short 
of it 10°. The extreme variation, therefore, is 22°. 
Rainfall. 1. That the chief yearly rainfall is from May to 
October, and is heaviest in October. During these six months 
it amounted to forty-four inches, and during the remaining six 
months to nineteen inches; and that the greatest rainfall does 
not correspond with the greatest pressure of wind. 
Wind. 1. That the highest winds prevail in November and 
January, and the average from October 1st, March inclusive, 
greatly exceeds the average of the remaining six months, and 
that there is little difference between morning and afternoon. 
2. That north-easterly and easterly winds are the most preva- 
lent from September to February, during which months they 
blow during one-half or two-thirds of the whole time. North- 
erly winds seldom blow except during those months, and then 
only for three days in a month. From June to August, the 
average is less than a day. Easterly and south-easterly winds 
prevail chiefly from March to August. South-western are most 
prevalent in February and March, to the extent of two to three 
days in a month; westerly winds from February to April to the 
-extent only of one to one and a-half days in a month, and dur« 
