Xll ILLUSTRATIONS 



Farrington's Bottle-Cleaner — Bottle-Holder Immersed 52 



Farrington's Bottle-Cleaner — Bottle-Holder Draining 52 



Correct Way of Holding Pipette and Buttle ... 55 



Wrong Way of Holding Pipette and Bottle ... 56 



Measuring Fat-Column 63 



Automatic Russian Pipette 67 



Russian Test-Bottle 67 



Bulb-Necked Cream-Bottle 70 



Straight-Necked Cream-Bottle 71 



Cream-Testing Scales 72 



Cream-Sampling Sieve 74 



Bottles for Testing Skim-Milk 79 



Glass Funnel for Use in Testing Butter .... 83 



Mann's Acid Test 93 



Farrington's Alkaline-Tablet Test 96 



Spillman's Acid-Cylinder 97 



Purdue Alkali-Test '99 



Hand-Centrifuge for Sedimentation Work . . . 110 



Tube for Sedimentation Work 110 



Bausch & Lomb Electric Centrifuge 110 



International Instrument Co.'s Electric Centrifuge . Ill 



Glass for Collecting Sediment in Milk 112 



Monrad Rennet-Test 113 



Marschall Rennet-Test 115 



Quevenne Lactometer 122 



Cylinder for Lactometer 125 



Comparison of Different Specific Gravity Scales . 126 



Richmond's Slide-Rule 130 



Butter-Trier 151 



