138 



CLEAN MILK 



and the cars, carriers and bottles are all wheeled directly into the 

 sterilizer and out again without handling the individual bottles 

 (see Figs. 41 and 42). 



Shipping Cases and Boxes. — Milk bottles of glass must be 

 shipped in some sort of box. The writer has had such boxes made- 

 <of strong galvanized iron (24 gage) with rolled edges at all the 

 joints, with a hinged cover and padlock, and with metal handles 

 at either end. Padlocks must be made to have the same key fit 

 them all; but we have found great trouble in getting padlocks which 



Fig. 42. 



A Car for conveying carriers and bottles. 



were not continually getting out of order. For this reason, and 

 "because keys for such padlocks are readily obtained by outsiders, 

 I recommend the use of a lead seal having an opening through 

 -which the ends of short wires are passed. The seal is then com- 

 pressed by a special punch, thus locking the ends of the wires and 

 serving as a perfect padlock which is not likely to be tampered 

 ■with without detection. The seal and wire for each shipping 

 box cost about one-sixth of a cent and may be obtained complete 

 ■with the punch. One called " The Enterprize Punch & Seal " 



