MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



471 



Tablk V. — Frnnkford <li«lrirl, TJelaii'are water. 

 [liesuUs in parts per 100,000.] 



Chlorine. 



Date. 



1892. 

 Nov. 19. 



Dec. 1. 



1893. 

 Jan. 11. 



13. 



24. 



Feb. 7. 



17, 

 20 



0.34 

 .34 



Mean. 



Oxygen con. 

 sumed. 



; 0. 340 



.210 



■\{ 



.20 



.18 



.24 

 .23 



.30 

 .32 



.20 

 .18 



.21 

 .20 



.190 



.235 



.310 



< 0.2 



\ -2: 



0.24 



13 



.25 

 .22 



Mean. 



Free ammonia. 



Tin Glass 

 tube. tube. 



.490 



.0032 



ilar. 10. 



17. 



24. 



31. 



Apr. 7. 



\- 



.215 



.24 ( , 

 .27 <, ■- 



"all- 



.12 's •' 

 . 16 j ( 

 . 15 I ) • ' 



.17 ) -^ 



.23 I ? 

 .21 ) 



.18 

 .18 



.18 

 .18 



.15 \ 

 .14 5 



.ISO 



.0040 

 .0019 



.0155 



.0071 

 .0061 

 .0071 



\- 



25.. 



May 5 

 15.. 



23.. 



30.. 



June 13.. 



23.. 



30.. 

 July 17.. 



31. 

 Averasre. 



i .28 ) 

 C .121 



i M 



? .12 1) 



i lajj 



.15 

 .18 

 .19 

 .19 



( .23 '( 

 ) .19 1 



-,{ 



.133 • 

 .150 



.120 ^ 



.21 t 

 .21 > 



.32 

 .34 



.29 

 .29 

 .33 



.42 

 .48 



\ M 



.44 

 .46 



.330 



.303 



.450 

 .395 

 .450 



.19 ') 

 .18 I ( 

 .19 S 



.160 



.187 



niina- 

 tion. 



.0035 



.0032 

 . 0025 



.0010 

 .0005 



.0019 



.0021 



.0022 



.0018 

 .0025 

 .0044 



0. 0034 



.0051 

 .0028 



.0152 



.0076 

 .0052 

 .0074 

 .0054 



.0047 



.0017 

 .0011 

 .0006 



.0017 



.0007 

 .0006 



.0006 

 .0016 



.0007 



.0007 

 .0013 , 

 .0028 I 



.0038 



.0046 

 .0024 



.0154 



.0074 

 .0057 

 .0073 

 .0055 



.0049 



.0017 

 .0016 

 .0008 



Albuminoid ammonia. 



Tin Glass 



tube. tube. 



.0095 



.0026 



.0020 

 .0016 



.0007 

 .0018 



.0019 



.0162 

 .0091 



. 0154 



.0114 

 .0101 

 .0146 

 .0150 



0. 0167 



.0158 

 .0083 



.0144 

 .0099 

 .0108 



100 cc. 

 deter- 

 mina- 

 tion. 



0. 0270 



.0200 



.0140 

 .0138 



.0131 

 .0108 



.0013 .0097 



.0206 

 .0194 



.209 



.0124 



.0073 



.0147 



.0101 

 .0084 

 .0141 

 .0117 



.0109 



.0100 

 .0109 

 .0089 



Mean. 



0.0170 



.0135 



.0156 

 .0142 



.0127 



.0110 



.0083 



.0133 



.0104 

 .0182 

 .0173 



.0143 

 .0082 



.0151 



.0107 

 .0093 

 .0144 

 .0134 



.0109 



. 0122 

 .0104 

 .0099 



.0168 



.0148 

 .0140 



.0129 

 .0109 



.0148 



.0101 

 0.191 

 .0184 

 .0134 



Nitrogen as 

 nitrates. 



0.055 

 .070 



.045 



.040 



: .040 



.040 

 .040 

 .045 



Mean. 



\ 0. 063 

 \ .042 



042 



C .070 



i .100 



5 .070 j 



\ .070 : 



5 .050 I 



\ .000 



C .060 



) .060 



( .050 



) .000 



( .065 



( .065 



( .060 



\ .060 



< .060 



<; .050 



\ .030 



C .050 



\ .050 



C .050 



\ .050 



.070 



.055 

 .060 

 .055 

 .005 



.057 



Bacteria in one 

 cubic centimeter. 



15, 700 

 15, 100 

 8,000 

 7,550 



6,450 

 8,150 

 5,680 



Mean. 



11,588 



5.700 

 5.700 



8,200 

 12,400 



300 i 

 500 



2, 900 

 2, 500 

 3,250 



J .030 

 I .050 

 \ .050 



.060 I 

 .060 



.050 I 

 .050 ) 

 I 

 .040 

 .040 



.040 

 .040 



.020 

 .020 



2,750 

 4,250 



1,350 

 1,240 



1,250 

 1,410 



( 1,560 



\ 1,440 



f 510 ? 



\ «0 I ) 



S 1.110 i X 



\ 1,030 1 5 



C 690 ) 



i 800 i 



^ 5,700 

 I 10, 300 

 \ 400 



[ 2,886 



5.600 

 \ 3,500 

 I 1,295 

 I 1,330 



] 1,.500 



X 460 



\ 1,070 



745 



il 



.030 

 .030 



.050 



.040 



1 



\ .030 



C .060 ( (.go 



\ .060 5 •"'"^ 



I .020 



.020 

 .020 



C .070 

 { .070 



\: 



.040 

 .040 



.040 

 040 



\ 



3,120 

 830 

 695 



530 

 680 

 720 



2,810 

 2,430 



2,350 



2,800 

 2,370 

 2,710 

 2. 850 



660 

 660 



450 

 330 



I 2,620 



2,350 



390 



1,710 

 1.860 ,. 

 1,965 ) 



\^.i 



|.07o!| 



|.o. 



1,520 

 1.880 

 2,010 



17. 110 ? , . QOR 

 11,660 jl-t'SSS 



|,„ 



3,475 



