122 MARKET DAIRYING 
kept in the same bottle until it is to be consumed. 
Whenever milk is changed from one vessel to another 
there is always more or less contamination from dust and 
bacteria. 
Bottling: | For dairies having from ten to twenty 
cows, a can or vat provided with a sanitary faucet will 
do satisfactory work in filling bottles. A pouring can 
with a slightly curved spout may also be used for this 
purpose. 
For large dairies special bottle fillers will be found 
advantageous. ‘These machines fill from two to twelve 
bottles at a time. In selecting a bottle filler secure one 
of simplest construction. This is important for sanitary 
reasons. 
Whatever method of filling is used, it is important to 
keep the milk well stirred while filling, so as to insure 
uniform quality in all the bottles. 
Special machines are now on the market for capping 
bottles. With the larger machines it is possible to cap 
many thousands of bottles in a day. The machines not 
only have the advantage of rapid capping, but eliminate 
possible infection from the-hands where the capping is 
done by hand. 
The tendency at present is to seal the bottles with 
hermetic seals similar to those used on beer bottles. 
This insures against tampering, protects the lips of the 
bottles and makes possible pasteurization of the milk 
in bottles. A bottle so capped is shown in Fig. 4o. 
