View report page

15
The samples were obtained on the following dates: —
Winter yield, January 13th.
Spring yield, April 14th.
Summer yield, July 14th.
The arrangement for obtaining an Autumn yield on October 13th was
cancelled owing to the abnormal conditions then existing as a result of the General
Strike.
About five tons of refuse from each of the above-mentioned three classes was
obtained at each collection. The samples of refuse were conveyed to the
Contractor's depot where, after careful weighing, analyses were proceeded with.
First, the whole of a sample was passed over a hand riddle having a mesh of
5/16th of an inch; the fine material passing this mesh was designated " fine dust."
The rejected material was then passed over a second screen having a mesh of ¾
of an inch. From the material passing this mesh all foreign matter, such as glass,
pottery, stone, wood, etc., was eliminated, and the product resulting from this
second screening was designated "small cinder." A third riddle, 1½ inch mesh,
was then used followed by the elimination of the smaller foreign matter, the result
being "large cinder." The foreign material already eliminated and the remainder
of the sample were then hand sorted into the following divisions :—
Vegetable.
Putrescible.
Paper.
Metal.
Bag.
Glass.
Bones.
Combustible debris not classified.
Incombustible debris not classified.
At the conclusion of the division of the sample into these eleven parts each
part was carefully weighed and the weights together with the percentage of the
weight of the original sample were recorded.
From the data obtained by analyses of the three samples of house refuse a
calculation was made on the basis of a sample of ten tons of refuse, made up in
the proportions the three classes of property mentioned above bore to the total
properties in the Borough. The results of these analyses are given in the following
table: —