"Off at a tangent" -- rather a habit of mine -- but I congratulate myself on having thought of a fine 1894-compatible solution for the "big cities drowning in horse manure" issue: which would have been effective, even if the advent of internal combustion had not been just round the corner. The problem is addressed as follows: inaugurate narrow-gauge freight-type tramways, with steam or maybe electric traction (not horse-worked -- that would have added to what was having to be tackled), running in all directions from the city centres, as far out into the countryside as proved necessary. The purpose of the tramways would be for horse manure to be loaded, in the city, onto their wagons; and conveyed into the countryside, for the benefit of anyone cultivating the land in any way, for whom it would be of use as fertiliser. Sell the stuff to the cultivators if possible -- if not, give it away free. Empty stock worked back into the city: repeat "in perpetuity".