ILLUSTRATIONS 
HALFTONES PAGE 
. Alveoli of the Udder in Cross-section.................. 2 
. Cross-section of an Alveolus of the Udder at the Time 
of Parturition) os ssed cccieeas Ace oe dd eee Paes Seek Re 2 
Involution of the Udder of an Old Cow................ 8 
. Extremity of the Milk Cistern.....................0.4 3 
. Colonies of Coli Aérogenes............. 000000 e eee 54 
. Colonies of Proteus Vulgaris.........0.0. 00000 cee veces 54 
. Internal or Double-tube Cooler...................... 186 
. Various Types of Dirt Testers..................000005 300 
TEXT CUTS 
. Preparation Showing Streptococcus Lacticus or Bacterium 
Lactis Acidt.... 0.0.0 occ cece eee ene 53 
. Preparation from Sediment from a Cow Affected with 
Catarrhal Mastitis........... 00.00.0000 cc eee ee eee 53 
9. Inlet in a Wall Already Constructed; Inlet in a Wall 
Being Built, and an Outlet Shaft with Two Openings.. 132 
10. An Outlet Flue Hinged at the Ceiling................. 184 
11. Cross-section of Stable Floor....................2005 142 
12. Window Arranged to Act as Fresh Air Inlet............ 147 
13. Open or Uncovered Pail...................00..000000. 171 
14. Covered-top Pail with Opening Nearly Horizontal...... 171 
15. Covered-top Pail with Vertical Opening............... 172 
16. Another Variety of Covered-top Pail.................. 173 
17. Floor Plan of Conveniently Arranged Milk House...... 181 
18. Cooler of Conical Type...............00 0.02 eee eee 183 
19. Corrugated Type of Cooler................0...-.000 00. 184 
20. Tubular Cooler, with Continuous Surface.............. 185 
22. Section Showing Relation of Water Table to Surface Irreg- 
UWIATILIOSS ve. cavers 4s wi ens ene MOR ee 194 
23. How Springs May be Polluted by Subsurface Drainage.. 195 
24, A Pasteurizer of Simple Type.................-.2.00.. 216 
OF . Pasteurizets ocak dein culties 8 esd BEE See Ee eee Q17 
