ILLUSTRATIONS 
a. Pasteurizer :jc2cnc.g ait ets tek O Dede u ek 218 
. Regenerative Cooler............. 000 cece eee ee eee 219 
. A Simple Holding Tank................0000 0c cena ee 220 
. Retarder of the Tank Type...............0....00200 0+ 221 
. A Combined Pasteurizer and Holder.................. Q21 
. Quevenne’s Lactometer............. 00.00. e eee eee 228 
. Westphal Balance............0. 000 eee eee ee 232 
. Modern Type of Babcock Milk-testing Bottle .......... 234 
. Pipette Used in Babcock Test for Measuring Milk...... 234 
. Cylinder Used in Babcock Test for Measuring Acid..... 235 
. Bottle and Pipettes Used in Gerber Test........ ...... 237 
. Feser’s Lactoscope.........0 2... c eee cence eee 239 
. Zeiss Dipping Refractometer....... ...... 2.2... eee Q51 
. Sediment Tube Used in the Trommsdorff Test.......... 283 
. Gerber-Lobeck Catalase Apparatus.................-- 288 
