CONDITIONS OF SEDIMENTARY DEPOSITION. 



509 



ANALYSES PARTS PER 1,000,000 OF WATER. 



Constituents. 



Ottawa. 



a 



St. 

 Lawrence. 



b 



Mississippi. 

 C 



Missouri. 

 d 



Missouri and 

 Mississippi. 



e~ 



Missouri and 

 Mississippi. 



/ 



Total Solids. 

 Filtered sedi- 

 ment 



K 



Na 



MgO 



CaO 



CI 



so 3 ........ 



Si0 9 



Iron and al- 

 umina 



69-75 

 1.52* 

 2.39* 

 2.36* 



13.88* 



.76 



1. 61 



20.60 



69-75 



traces 



167.80 

 1. 15* 



5-°3* 



12.08* 



44.92* 



2.42 



6.87 



37.00 



167.80 



traces 



253.69 



20.90 

 not given 



3-37* 

 28.26 



52-93 



5-3i 



10.28 



not given 



20.90 



1207.66 



638.26 

 not given 

 12.76* 

 41.96 



no. 15 



19-53 



89.76 



not given 



638.26 



55-84 



1058.98 



622.33 

 not given 

 9.16* 



37-51 



109.63 



14.22 



73.66 



not given 



622.33 



20.90 



787.12 



389-36 



not given 



10.37* 



39-40 



94.90 



15-93 



69.89 



not given 



389-36 



26.80 



According to Gooch 1 the combination in these analyses should 

 be calculated in the order KC1, NaCl, K 3 S0 4 . Na 3 S0 4 , MgS0 4 , 

 CaSQ 4 , MgC0 3 , CaCO ; 



Na 3 CO s , etc.; 



followed in the Canadian analyses, 

 hypothetical combination. 



and this is the order 

 Hence the following is the 



d 



f 



Total Solids_ 

 Filtered sedi- 

 ment 



KC1 



NaCl 



K 2 S0 4 



Na 2 S0 4 



MgS0 4 .___ 



Ca S0 4 



MgC0 3 ..._ 



Ca C0 3 



Na 2 C0 3 



Fe s 3 +— - 

 Al,-O a 



69-75 

 1.60 



1.22 



1.88 

 none 

 none 



6.96 

 24.80 



4.10 



traces 



167.80 

 2.20 

 2.25 



12.29 



none 



none 



25-37 



80.83 



0.61 



traces 



253-69 



20.90 

 not given 



8-57 

 not given 

 not given 



I5-4I 



none 



19.63 



94-56 



none 



1207.66 



638.26 



not given 



32-03 



not given 



not given 



125.90 



9-93 

 none 



189.35 

 none 



55-84 



1058.98 



622.33 



not given 



23-30 



not given 



not given 



118.49 



none 



1-37 



195-79 



none 



20.90 



787.12 



389-36 



not given 



26.38 



not given 



not given 



104.83 



none 



4.28 



169.47 



none 



26.80 



The chemical reactions which take place between substances 

 dissolved in river waters and those contained in salt water are no 

 doubt complex ; but that which is most significant in relation to 

 possible precipitation of carbonate of lime depends upon the 

 fact that organic matter may decompose sulphate of lime. Ac- 



* Calculated from combinations given in the original publications. 



1 Analyses of Waters of the Yellowstone National Park, Bull. U. S. G. S., No. 47, 

 p. 24. 



