112 SCIENTIFIC SURVEY OF NORWICH AND DISTRICT 
The Corporation have recently made application for a Provisional Order 
extending the area of supply to include twenty-seven rural parishes in 
the county of Norfolk and also the town of Aylsham, which is twelve 
miles from Norwich. No alteration in the area of supply has been made 
since 1876, and the proposed extension is largely of an experimental 
nature. 
The Norwich supply is obtained from the river Wensum and is of 
ample quantity and excellent quality. In 1934-35 the average daily flow 
past the intake was 67 million gallons, while the average daily consumption 
was 4 million gallons. Norwich is, therefore, fortunate in having a con- 
siderable margin of supply on which to draw. The water is treated by 
filtration in open sand filters and also in mechanical pressure filters which 
have recently been installed. Although the supply is of high purity for 
a river supply the water is also chlorinated as an extra precaution. The 
water is pumped by electrically driven pumps to the city, distribution 
taking place from the rising mains, the surplus water entering the service 
reservoirs at Lakenham and Mousehold. These reservoirs are used for 
supplying the city by gravity when the pumps are not in use. 
MarRKETS. 
The Cattle Market extends over more than 83 acres and is the second 
largest cattle market in the country. For the year ending March 31, 
1934, 212,304 head of stock were exhibited for sale. 
During the autumn a large trade is carried on in store cattle imported 
from Ireland, which are sold for fattening on the Norfolk farms. 
On the market the Corporation have provided covered sale rings for 
the sale of fat cattle, dairy cattle, pigs and calves. In 1933 a new covered 
poultry market, with accommodation for the display of 3,000 poultry, was 
opened, and during the following year over 152,000 birds were exhibited 
for sale. 
The open general market is situated in the centre of the city between 
the Church of St. Peter Mancroft and the Guildhall. The principal 
market days are Wednesday and Saturday, but since the War trading has 
been carried on every week-day. Fruit, flowers, vegetables, meat, eggs, 
butter, poultry, fish and other commodities are sold on the market. 
A wholesale fruit and vegetable market from which the city and sur- 
rounding district is supplied is held in the early morning in the market 
lace. 
; The Corporation also own a wholesale fish market in Mountergate © 
Street. 
MouniciPpaAL AERODROME. 
During the War the Government established an aerodrome adjoining 
Mousehold Heath and constructed extensive hangars. After the War these 
were occupied by Messrs. Boulton & Paul, Ltd., a local firm who specialised 
in aircraft design and manufacture. In 1927 the Norfolk and Norwich 
Aero Club was formed under the auspices of the then Lord Mayor 
(Alderman C. R. Bignold) and Sheriff (Mr. A. A. Rice, M.C.), with the 
object of providing facilities for civilian flying and stimulating interest in 
