Henry Leber Coit, a medical doctor, was the founder of the first Medical Milk Commission and the certified milk movement, which resulted in the availability of safe raw milk from regulated dairies for physicians, their patients and the public. In 1889, Henry Coit, MD, of Newark, New Jersey, asked the Medical Society of New Jersey…
Out of the study of the London sewage and its behavior in the Thames came the conviction that purification could be carried out by natural processes, without the intervention of chemicals, and thus was evolved the biological treatment in contact beds, which system, destined to revolutionize sanitary engineering, was developed at the Northern Outfall Works…
Mr. Lowcock in 1892, filtered the effluent from a chemical precipitation process at Malvern through a gravel filter at the rate of 300,000 gallons per acre per day. He also used a fine surface layer of gravel to distribute the sewage. Hence in order to maintain aerobic conditions, compressed air was forced into the lower…
Sedgwick and Batchelder were among the first to count bacteria in milk. Their pioneering work in Boston, from 1890 to 1892, was a revelation and their method was quickly followed by others. In 1990 New York was the first city to use this approach as a basis for setting a bacteriological standard for ordinary market…