252 IOWA ACADEMY OF SCIENCES. 



BACTERIOLOGICAL RESULTS— Continued. 



TEMPERATURE. 



August 1 

 August 2 

 August 3 

 August 4 

 August 5 

 August 6 

 August 7 

 August 7 

 August 7 

 August 8 

 .August 9 

 August 10 

 August II 



August 12 



August 13 

 A gust 14 

 August 15 

 August 16 

 August 17 

 ."Vugust 7 

 August 17 

 August 18 

 .August 19 

 August 20 

 August 2t 

 August 22 

 Angust 22 

 August 22 

 August 2\ 

 August 24 

 .August 25 

 .\ugust 26 

 August 27 

 .August 28 

 August 29 

 August 30 

 August 31 



Tank .. .. 



W.E 



E.E 



WE 



E.E.... 

 W.E.... 



WE 



Manhole. 



Tank 



E.E 



E.E 



W.E 



E.E 



♦Effluent 

 ♦Effluent 

 ♦Effluent 

 ♦Effluent 

 ♦Effluent 



W.E 



Manhole. 

 Tank .... 

 ♦Effluent 

 ♦Effluent 

 ♦Effluent 



W. E 



E.E 



Manhole. 



Tank 



W.E 



E.E 



E.E 



E.E 



E.E 



W.E.... 



W^E 



E.E 



W.E 



degrees 

 degrees 

 degrees 

 degrees 

 degrees 

 degrees 



degrees 

 degrees 

 degrees 

 degrees 



64 degrees 

 74 degrees 

 71 degrees 



74 degrees 

 7^ degrees 



75 degrees 



76 degrees 

 71 degrees 

 68 degrees 

 76 degrees 



75 degrees 



76 degrees 

 76 degrees 



87, 870 



100 

 3,600 

 70 

 60 

 400 



92 degrees 



76 degrees 

 70 degrees 

 68 degrees 



80 degrees 

 79 degrees 



75 degrees 

 75 degrees 



85 degrees 



86 degrees 

 84 degrees 



80 degrees 



81 degrees 

 80 degrees 

 88 degrees 

 83 degrees 



82 degrees 



76 degrees 

 76 degrees 

 75 degrees 

 73 degrees 

 73 degrees 

 72 degrees 



72 degrees 



73 degrees 

 73 degrees 



84,00^ 



403- I18 



560. 



Effluent under water. 



Average number of germs per cubic centimeter, in effluent. 



MONTH. 



August 



September. 

 October.... 

 November. 

 December. 



1899. 



AVERAGE. 

 3,246 



3, 660 



4.230 

 2,361 



2.3«9 



January 



February. . 



March 



April 



May 



iune 

 "ly 



August 



S«ptember. 



830 

 3.451 



23, 480 

 13.263 

 3.077 



2.359 

 2,370 



