The use of top milks in infant feeding is rapidly increasing, and we have thought it advisable to examine the typical milks of the Philadelphia milk market for their percentages of fat, particularly the milk sold with a certificate of quality issued under the authorization of the Philadelphia Pediatric Society.
The certified milks of Philadelphia are, Dr. J. P. Crozer Griffith informs us, four in number, as follows: The Willow Brook Farm, the Haddon Farm, the Wawa Dairy, and the Bryn Clovis Farm. Since this information was received, we have learned that the sale of certified milk by the Bryn Clovis Farm has been discontinued.
We have examined, also, the Walker-Gordon guaranteed milk, in one pint and one quart bottles, and the
milk regularly sold by four representative milk dealers of this city.
The certified milks, we are told, are from milkings made about 4 p. m., bottled on the