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39
equipment, the three stations which were to be furnished with this
apparatus were unable to commence operations until August.
ESTIMATION OF ATMOSPHERIC SULPHUR BY THE LEAD
PEROXIDE METHOD
The table on page 40 gives the monthly figures for each station
in the Borough. The station with the highest average was Bashley
Road (1.84), which also had the highest monthly reading, 2.93.
That with the lowest average figure was Acacia Road (1.34), and
that with the lowest monthly figure Kenday Avenue (0.35).
For the purpose of comparison the monthly average figure for
all stations is given in the form of a graph on page 41.
DEPOSIT GAUGES
The table on page 4*2 gives the monthly deposit of solids from
the atmosphere in tons per square mile for the five months during
which the gauges were in operation. The highest average monthly
deposit (33.87) and highest month's deposit (44.65) were at Bashley
Road, and the lowest monthly average and month's deposit were
at Kendal Avenue (17.89 and 12.11). The graph on page 41 shows
the comparison between the average monthly figures for the three
stations.
Of the total of 361 tons of material deposited per square mile
at the three stations, some 21% or 76 tons, was classed as combustible
material and may be accepted as an indication of wasting of
fuel—irrespective of waste in gaseous form.