CONTENTS. Vil 
CHAPTER XI. Page. 
APPLICATION OF THE FOREGOING RESEARCHES TO WATER ANALYSIS. 
Preliminary discussion—Method of using classes 1, 2 & 3—Stan- 
dards for Lakes—Rivers—Wells—Examples of typical ana- 
lysis ae ze ar I116—134 ~ 
CHAPTER XII. 
THE “ COLI”? METHOD COMPARED WITH THE SEPARATE SPECIES METHOD— 
Final Conclusion mé se ; ..135—148 

APPENDIX A. 
METHOD OF ANALYSIS USED IN THE WORK 149—157 

APPENDIX B. 
BRIEF REMARKS ON CHEMICAL ANALYSIS 158, 159 

APPENDIX C, 
MEDIA USED IN THIS WORK 1 160, 161 
