204 mr. a w. preston's meteorological notes. 
(4) In England three species of the Anopheles are known to 
occur. Anopheles maculipennis, A. bi/urcatus, and A. nigripes, 
but the A. maculipennis is by far the most common. 
(5) According to historical and hearsay evidence there is no 
doubt that a disease known as Ague or Fen-Ague was prevalent in 
certain parts of England, chiefly in the low-lying, ill drained and 
marshy districts, up to about the middle of the last century. Its 
almost complete disappearance (except for occasional sporadic 
cases) at the present time may be attributed chiefly, though 
probably not entirely, to a more complete system of drainage in 
these districts, with a consequent diminution in the number of the 
Mosquitoes. 
(6) There is now conclusive proof that this Fen-Ague in England 
is caused by a parasite of the same nature as that known to cause 
Malaria in other countries. 
(7) One of the most effectual ways of getting rid of Malaria in 
any district is by an extermination of the Mosquitoes. This can 
be effected by doing away with their breeding-places, pools, 
swamps, lakes, &c., by effectual drainage, and by destroying the 
larvae of the insects in the water. 
XII. 
METEOROLOGICAL NOTES, 1900. 
(From observations taken at Bradestone House, Brundall, Norfolk.) 
By Arthur W. Preston, E. R. Met. Soc. 
Read 26th February , 1901. 
January. 
This was a damp, ungenial month, with a great preponderance of 
cloud and gloom. There was frequent rain, although the falls 
were at no time very heavy, and the absence of any drying power 
