ii6 



BULLETIN OF THE BUREAU OF FISHERIES. 



nonproductive streams, is an interesting exception. So far as can be seen, its analysis 

 conforms essentially to the standard of productiveness in mussels as revealed by streams 

 of the Mississippi Basin. It is possible, then, that the Shenandoah, and perhaps a few 

 other streams of the Atlantic or Pacific slopes, might support fresh-water mussels of 

 commercial value should the proper species be introduced. 



Table 9. — Contents op Waters op Certain Productive Mussel Streams and Other Nonpro- 

 ductive Streams." 



PRODUCTIVE RIVERS. 



Wabash, Vincennes, Ind 



Illinois, La Salle, 111 



Illinois, Kampsville, 111 



Fox, Ottawa, 111 



Sangamon, Springfield. Ill 



Cumberland, Nashville, Tenn . . 



Cumberland, Kuttawa, Ky 



Des Moines, Keosauqua. Iowa. . 



Grand, Grand Rapids, Mich 



Cedar. Cedar Rapids, Iowa 



Manmee, Toledo, Ohio 



Mississippi, Moline, 111 



Mississippi, Quincy, 111 



NONPRODUCTIVE RIVERS, 



James, Richmond. Va 



Potomac, Cumberland, Md 



Wateree, Camden, S. C 



Shenandoah, Millville, W. Va. . 



Mississippi, Chester, 111 



Mississippi, Memphis, Tenn .... 



Red, Shreveport, La 



Missouri, Ruegg, Mo 



Savannah, Augusta, Ga 



Hudson, Hudson, N. Y 



Cape Fear, Wilmington, N. C . . 



Turbidity. 



173 

 159 

 188 



94 

 74 

 136 

 176 

 543 

 37 

 64 

 143 

 "7 

 173 



90 



28 



359 



31 



858 



SS6 



790 



1)931 



173 



13 



73 



Suspended 

 matter. 



193 

 136 

 145 

 87 

 39 

 94 

 I6S 

 643 

 43 

 61 



113 

 106 

 119 



71 



39 

 314 



39 

 634 

 SI9 

 870 

 1,890 

 142 



16 



Coefficient 

 of fineness. 



I. 30 

 .80 

 .80 



I. 20 

 .80 

 •74 

 .92 



1.09 



1. 61 

 •97 

 .95 

 .9 

 .8 



• 96 



•79 

 1.64 



Total 

 iron (Fe) 



•7 

 ^•3 



SiUca 

 (SiOi). 



I3^0 

 13. O 

 Z3.0 

 11,0 

 16.0 

 30.0 

 18.0 

 32.0 

 14.0 

 14.0 

 17.0 

 16.0 

 18.0 



18.0 

 8.2 



25.0 

 IS-O 

 32.0 

 24.0 

 30.0 

 39.0 

 23^0 



II. o 



9.9 



Iron (Fe) 



.27 

 . 20 

 .33 

 .42 

 •30 

 .36 

 .07 

 .09 

 .27 



•39 

 .46 



■S 

 .14 

 .28 

 .08 

 ■39 

 .61 

 I. I 

 •SI 

 .44 



.IS 



.78 



Calcium 

 (Ca). 



61.0 

 50.0 

 47- o 

 60.0 

 52.0 

 26.0 

 28.0 

 s8.o 

 56.0 

 48.0 

 S7.0 

 33.0 

 36.0 



14.0 

 24.0 

 6-3 

 33.0 

 44.0 

 36.0 

 74.0 



52. O 



S-7 

 21.0 



S.o 



Magne- 

 sium 

 (Mg). 



23. o 

 22.0 



20.0 

 33-0 

 24>0 



3-6 

 4-3 



2i>o 

 19.0 

 16.0 

 16.0 

 13- o 

 i6. o 



3-0 

 4.6 

 1.8 

 8. a 

 16.0 



13.0 

 17.0 

 16.0 



.8 

 3.8 

 I- 5 



PRODUCTIVE RIVERS. 



Wabash, Vincennes, Ind 



Illinois, LaSaUe, 111 



Illinois, Kampsville, III 



Fo.x. Ottawa. Ill 



Sangamon, SpringBeld, 111 



Ciunberlaud, Nashville, Tenn... 



Cumberland, Kuttawa, Ky 



Des Moines, Keosauqua. Iowa. . 

 Grand, Grand Rapids, Mich. . . . 



Cedar, Cedar Rapids, Iowa 



Maumee. Toledo, Ohio 



Mississippi. Moline. Ill 



Mississippi, Quincy. Ill 



NONPRODUCTIVE RIVERS 



James, Richmond, Va 



Potomac, Cumberland. Md 



Wateree, Camden. S. C 



Shenandoah. Millville. W. Va. . . 



Mississippi. Chester, 111 



Mississippi. Memphis, Tenn 



Red, Shreveport, La 



Missouri, Rucgg. Mo 



Savannah, Augusta, Ga 



Hudson, Hudson. N . Y 



Cape Fear, Wilmington, N. C. . . 



Soditun 

 and potas- 

 sium 

 (Na+K). 



Carbonate 

 radicle 



(COb). 



Bicarbo- 

 nate radicle 

 (HCO3). 



230 

 203 



303 

 375 

 247 

 92 

 IOC 



216 



314 

 309 

 173 

 153 

 17s 



60 

 36 



34 

 132 

 174 

 129 

 135 

 178 

 30 

 73 

 25 



Sulphate 

 radicle 



(SO<). 



55- o 

 50.0 

 42.0 

 61-0 

 37.0 

 14.0 

 9-7 

 71.0 

 33.0 

 30.0 

 48.0 

 24.0 

 25.0 



7-1 



58.0 



4.2 



6.3 



56.0 



43.0 



140. o 



104.0 



0.0 



16.0 



3-3 



Nitrate 

 radicle 



(NOs). 



6.4 

 6.6 



4-3 

 4.9 



3-4 



1. 3 



1.8 

 3-3 

 2.3 

 3-1 

 4.5 

 1.8 



3. 2 



2.6 



2-7 



1-7 

 •4 



2.9 

 .6 



Chlorine 



(CI). 



36.0 

 13.0 

 15.0 

 7.9 

 7-5 

 2. 1 

 3.0 

 4.8 

 7.7 

 3.4 

 40.0 

 3.7 

 4.4 



2.3 

 6.4 

 2.8 

 3.0 

 9.8 

 8.6 

 121. o 



13. O 

 2. I 

 4.0 



5-S 



Total 



dissolved 



solids. 



33* 



278 

 267 

 335 

 276 

 119 

 124 

 313 



258 



238 

 298 



179 



203 



89 

 13° 



73 

 140 

 369 

 302 

 561 

 346 



60 

 108 



S7 



o After U. S. Geological Survey. 



