TABLE OF CONTENTS. 



PAGE 



Calkins, Gary N. Paramecium aurelia and Paramecium caudatum - i-io 



Dyar, Harrison G. The Life-History of a Cochlidian Moth — 



Adoneta bicaudata Dyar 11-19 



Fuller, George W. Experimental Methods as Applied to Water- 



and Sewage-Works for Large Communities . - - - 20-35 , 



Leighton, Marshall O. The Futility of a Sanitary Water Analysis 



as a Test of Potability 36-53 



Whipple, George C. The Value of Pure Water - . - - 54-80 



Mathews, A. P. A Contribution to the General Principles of the 



Pharmacodynamics of Salts and Drugs 81-118 



Stiles, Percy G., and Milliken, Carl S. An Instance of the 



Apparent Antitoxic Action of Salts 119-123 



Jordan, Edwin O. Experiments with Bacterial Enzymes - - - 124-145 



.^WiNSLOW, C.-E. A., and Rogers, Anne F. A Statistical Study of 



Generic Characters in the Coccacea; 146-207 



^Prescott, Samuel C. The Occurrence of Organisms of Sanitary Sig- 

 nificance on Grains -.- 208-222 



^^Gage, Stephen DeM. A Study of the Numbers of Bacteria Develop- 

 ing at Different Temperatures and of the Ratios between Such 

 Numbers with Reference to Their Significance in the Interpreta- 

 tion of Water Analysis ....---- 223-257 



' WiNSLOW, C.-E. A., AND Lochridge, E. E. The Toxic Effect of Cer- 

 tain Acids upon Typhoid and Colon Bacilli in Relation to the 

 Degree of Their Dissociation -.--..- 258-282 



Phelps, Earle B. The Inhibiting Effect of Certain Organic Sub- 

 stances upon the Germicidal Action of Copper Sulphate - - 283-291 



Jackson, Daniel D. A New Solution for the Presumptive Test for 



Bacillus coli . . - -- 292-299 



Ayers, S. Henry. B. coli in Market Oysters 300-303 



Wadsworth, Augustus. Studies on Simple and Differential Methods 



of Staining Encapsulated Pneumococci in Smear and Section - - 304-312 



Kendall, Arthur I. An Apparatus for Testing the Value of Fumi- 

 gating Agents 3i3~320 



vii 



