By 1890 New York was running out of space. There were at least a 150,000 horses living in New York. Horses transported goods, services, and people throughout the streets, and while so occupied, each put out twenty-two pounds of horse manure each day. This amounts to 90,000 pounds each month.
The problems caused by such a copious and never-ending amount of horse shit are easy to imagine. George Waring, Jr., the City's Street Cleaning Commissioner, described the city as stinking "with emanations of putrefying organic matter." City streets, according to Elizabeth Kolbert, were"literally
carpeted with a warm, brown matting . . . smelling to heaven."
Brownstone apartment first floors were up one level to give relief from
the smells. Where lesser amounts of manure had been happily purchased by
surrounding farmers - the over abundant supply had produced such a glut, that
New York could not give the manure away.