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 



-Contents of Waters of Certain Productive Mussel Streams and Other Nonpro- 

 ductive Streams." 



Turbidity. 



Suspended 

 matter. 



Coefficient 

 of fineness. 



Total 

 iron (Fe). 



Silica 

 (SiOi). 



Iron (Fe), 



Calcium 

 (Ca). 



Magne- 

 sium 

 (Mg). 



PRODUCTIVE RIVERS. 



Wabash, Vincennes, Ind 



Illinois, La SaUe. lU 



Illinois. Kampsville, 111 



Fox, Ottawa. Ill 



Sangamon, Springfield, 111 



Cmnberland, Nashville, Tenn. . 



Cumberland, Kuttawa, Ky 



Des Moines, Keosauqua, Iowa.. 



Grand, Grand Rapids, Mich 



Cedar, Cedar Rapids, Iowa 



Maumee, Toledo, Ohio 



Mississippi, Moline, 111 



Mississippi, Quincy, III 



NOXPRODUCTrVE RrVERS, 



James, Richmond, Va 



Potomac, Cumberland, Md 



Wateree, Camden, S. C 



Shenandoah, Millville, W. Va. . 



Mississippi, Chester, III 



Mississippi, Memphis, Tenn. . . . 



Red, Shreveport, La 



Missouri, Ruegg, Mo 



Savannah, Augusta, Ga 



Hudson, Hudson, N. Y 



Cape Fear, Wilmington, N, C . . 



172 

 IS9 

 z88 

 94 

 74 

 126 

 176 

 54" 

 37 

 64 

 143 

 117 

 173 



90 



28 



2S9 



31 



858 



SS6 



790 



1,931 



172 



13 



73 



193 

 136 

 14s 

 87 

 39 

 94 

 l6s 

 642 

 43 

 61 

 112 

 106 

 J 19 



71 



29 

 214 



39 

 634 

 SI9 

 870 

 1,890 

 142 



16 



.80 

 .80 

 1. 20 

 .80 

 •74 

 .92 

 1.09 

 I. 61 

 •97 

 •9S 

 ■9 



1. 1 



3-4 



3-9 



3.0 



13-0 



13. O 

 13, O 

 11, O 

 16.0 

 20.0 

 18.0 

 23.0 

 14.0 

 14.0 

 17.0 

 16.0 

 18.0 



18.0 

 8.2 



25.0 



15,0 



22,0 

 24,0 

 30,0 

 29,0 

 23.0 



II. o I 

 9-9 



61.0 

 50.0 

 47-0 

 60.0 

 52.0 

 36.0 

 28. o 

 s8.o 

 56,0 

 48,0 

 57- o 

 33,0 

 36.0 



14.0 

 34.0 

 6.3 



32-0 



44.0 

 36.0 

 74,0 

 52.0 

 S-7 

 21.0 



32.0 

 32.0 

 30.0 

 32.0 

 24.0 



3-6 

 4-3 



31.0 

 19.0 

 16.0 

 16.0 

 13-0 

 16.0 



3,0 

 4.6 



1.8 



8.2 

 16.0 

 12.0 



17. Q 

 16.0 



.8 

 38 

 1-5 



PRODCCTIVE RTVBRS. 



Wabash, vincennes. Ind 



Illinois, La Salle. Ill 



lUinois. Kampsville, 111 



Fox. Ottawa, 111 



Sangamon, Springfield, 111 



Cumberland, Nashville, Tenn,,. 



Cumberland, Kuttawa, Ky 



Des Moines, Keosauqua, Iowa. . 

 Grand, Grand Rapids, ^iich. . . . 



Cedar, Cedar Rapids, Iowa 



ilaumee, Toledo, Ohio 



Mississippi, Moline. Ill 



Mississippi, Quincy, 111 



NONPRODUCTrvE RIVERS, 



James, Richmond. Va 



Potomac, Cumberland, Md 



Wateree, Camden, S. C 



Shenandoah. Millville, \V. Va. . . 



Mississippi. Chester, III 



Mississippi, Memphis, Tenn 



Red, Shreveport, La 



Missouri, Ruegg. Mo 



Savannah, Augusta. Ga 



Hudson, Hudson, N. Y 



Cape Fear, Wilmington, N. C. . . 



Sodium 



and potas- 

 sium 



(Na+K). 



25.0 

 16.0 

 18.0 

 14.0 

 x6. o 

 9.6 

 7.8 

 17.0 

 10,0 

 12.0 

 24,0 

 10. o 



II. o 



6.7 



9.0 



8.4 

 6.7 



21.0 

 19.0 

 90.0 

 36.0 

 12.0 



7,9 



7- 2 



Carbonate 

 radicle 

 (CO3). 



8-5 



4.6 



Bicarbo- 

 nate radicle 

 (HCO3). 



230 

 203 

 202 

 27s 

 247 

 92 

 100 

 216 

 214 

 209 

 173 

 152 

 17s 



5o 

 36 

 34 

 133 

 174 

 139 

 135 

 178 

 30 

 73 

 35 



Sulphate 

 radicle 

 (SO<). 



55- o 

 50.0 

 42.0 

 61.0 

 37- o 

 14.0 

 9.7 

 71.0 

 33^o 

 30.0 

 48.0 

 24.0 

 25.0 



7- 1 

 58.0 



4.2 



6.2 

 56.0 

 43^0 

 140.0 

 104.0 



6.0 

 16.0 



3^3 



Nitrate 

 radicle 



(NO3). 



6.4 

 6.6 

 4-3 

 4.9 



3-4 

 I. 2 

 1.8 

 3-3 

 2-3 

 3-1 

 4-S 

 1.8 



2.2 



•9 



.4 



2.6 

 2-7 

 1-7 

 •4 

 2,9 

 .6 

 .8 



Chlorine 



(CI). 



36.0 



13. o 



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 

 12.0 



a. I 



4.0 

 5-8 



Total 



dissolved 



solids. 



336 



2J8 



267 

 335 

 276 

 119 

 124 

 312 

 JS8 

 228 

 298 

 179 

 303 



89 

 130 



73 

 140 

 369 

 30S 



561 



60 



108 

 S7 



<• After U. S. Geological Survey. 



