We here come to the practical part of this complex subject. We have
ascertained the length of the streets of London--we have estimated the
amount of daily, weekly, and yearly traffic--calculated the quantity of
mud, dung, “mac,” dust, and surface-water formed and collected annually
throughout the metropolis--we have endeavoured to arrive at some notion
as to the injury done by all this vast amount of filth owing to what
the Board of Health has termed “imperfect scavenging,”--and we now come
to treat of the means by which the loads of street refuse--the loads of
dust--loads of “mac” and mud, and the tons of dung, are severally and
collectively removed throughout the year.
There are two distinct, and, in a measure, diametrically opposed,
methods of street-cleansing at present in operation.