210 



CITY MILK SUPPLY 



cans or 550 12-qt. boxes of bottled milk. The cars have end and side 

 doors, beveled and cushioned with canvas, opening inward to facilitate 

 handling at the platforms, and a large ice bunker in each corner. These 

 bunkers are filled at the icing stations by removing the hatches which 

 on the inside are beveled and cushioned with canvas. 



A specially designed ventilating system insures uniform melting of 

 the ice and thereby gives proper refrigeration. Insulation is provided 

 by building the car with an outside sheathing of yellow poplar % in. 

 thick next which is an air space of 2J-^ in. that is separated from a second 

 air space of 1% m - by a sub-lining of white pine covered with Hydrex 

 felt and sheathed inside with white pine. 



Courtesy of J. O. Jordan. 

 FIG. 38. New type of car used for transporting milk in New England. 



Some railroads place the ice directly on the cans instead of using 

 bunkers. Experiments were made at one time by one of the railroads 

 to determine whether the color of the car influenced the temperature 

 but it was found not to do so. 



The milk cars of the Lackawanna are run on passenger trains, or as 

 solid milk trains on passenger time. The trains are in charge of a milk 

 messenger or train agent whose duties are similar to those of an express 

 messenger and the service is of the character rendered by express com- 

 panies except that the milk is called for by the consignees instead of 

 being delivered by the company. 



In making up milk trains, wherever carload shipments are made, a 



