MILK SUPPLY 47 
evenly distributed over the twelve months of the year, the milk 
generally continues to be bought on the basis of its weight or 
volume, and not by test. Under these conditions the objection 
of not paying on the butterfat basis is, in part at least, removed. 
The great bulk of the milk supply reaches the condensery 
by wagon or by motor truck. Usually part of the cost of trans- 
portation is borne by the factory and 
part by the farmer. Some milk con- 
densing concerns operate concentration 
points to which the milk is hauled by 
the patrons, and from which it is hauled 
to the factory in Jarge glass-lined tanks 
Fig. 3. mounted on motor trucks. Shipments 
Glass-lined steel tank on Dy rail are less common in this country, 
truck for transporting the uncertainty of rail transportation, 
fluid milk to con- y 
apace with its frequent delays, jeopardizes 
Courtesy of The PfaudlerCo, the quality of the milk. Payments for 
the milk are generally made monthly. 
Quality.—'The quality of the fresh milk is the first and most 
important factor to be considered. ‘he milk condensing factory, 
ignoring this fact and accepting milk from unsanitary dairies 
and careless dairymen. is bound to pay the penaity for such 
neglect sooner or later. 
Polluted milk and milk that has not been cooled promptly 
and to a reasonably low temperature on the farm, may pass 
through the process successfully, if it is not tog sour, The con- 
densed milk made from it, though, is inferior in flavor and keep- 
ing quality, and usually shows signs of deterioration and decay 
before it reaches the consumer. The risk of handling such milk 
is very great; 1t may result in total loss to the manufacturer 
The trouble may and often does begin before the process is com- 
pleted. Unclean, abnormal, or partly fermented milk, when sub- 
jected to the process, is prone to curdle and whey off; the con- 
densed milk becomes Jumpy and shows other defects. This is 
especially true where superheating is practiced and where evap- 
orated milk is made. 
Milk that has received the best of care on the farm may be 
detrimental to the interests of the condensery, if it comes from 
cows less than thirty days before their parturition, or from fresh 
