Note 259 — A CYCLOPÆDIA OF PRACTICAL RECEIPTS, PROCESSES, AND COLLATERAL INFORMATION (continued 30)

In streets where there is much traffic the air above has been found to contain large quantities of dust composed, amongst other matters, of the remains of horse droppings; hence the great importance of assiduously watering and cleansing the thoroughfares of all large cities and towns. A plan for laying the dust of streets has been suggested by Mr Cooper, and consists in watering them with waste chlorides of calcium and magnesium. Carbolic acid has been employed for the same purpose by many urban authorities for some years past.