( 304) 
16. G. Biscuor, l.c. p. 275 (4 Maart 1853). 
1721. ©. Scum, Je. and Tome 16 (1871), p. 191; Tome 28 (1883), p. 248. 
99-95. Sie. Cr. DeviLLe, Annales de Chémie et de Physique, 1848,(3) T. 23, p. 42. 
(17 Juni 1846). 
26. MOLDENHAUER, Jahresber. Chemie für 1857, p. 724. (Very low water; 
January 1857). 
97—30. W. Ux, Der Würmsee (Starnbergersee) in Oberbayern, Leipzig 1901, p. 198. 
(Analyses of the water of 4 lakes in Upper-Bavaria by A. SCHWAGER). 
31. R. Goperrroy, Zeitschr. d. allgem. österr. Apothekervereins. Ref. in Jahresber. 
Chemie fiir 1882, p. 1623. 
32. Hopars, Chemical News, 1874, Vol. 30, p. 133. 
33—37. A. DELEBECQUE, Les lacs frangais. Paris 1898, p. 202, 203, 213, 275, 285, 292. 
38. H. L. JOHNSON, in Liebigs Annalen d. Chemie 1855, Bd. 95, p. 230. 
39. A. Muntz, Comptes rendus Acad. des Sciences. T. 112, (1891), p. 449. 
40. A. Cufiu, De l’Equateur à la Méditerrannée. Le Nil, le Soudan, l’Egypte, 
p. 177. Paris 1891. (Mean of 12 monthly analyses by MATHEYy). 
41. Créru, Ibid. p. 19. 
42. Créuu, Ibid. p. 25. 
43—44. Geology of Canada. Geological Survey of Canada. Report of Progress from 
its Commencement to 1863, p. 565—566. 
45. Geological and Natural History Survey of Minnesota, Eleventh Annual 
Report, p. 175. 
46. Report Louisiana State Board of Health 1882, p. 370. (Cl and Na not 
determined independently). 
47. T. MerrarD RrADr, American Journal of Science. (3). Vol. 29, p. 295. 
48. F. Karzer, Sitzungsberichte der Kon. bölimischen Gesellschaft der Wissen- 
schaften. Math.-Nat. Classe. Jahrgang 1897. p. 3—6. Prag. 1898. (Mean of 
2 analyses: deep and superficial water. Na not directly determined). 
49, 51, 52. J.J. J. Kyrie, Chemical News. Vol. 38. (1878), p. 28. 
50, 58, 54. R. Scroeuver, Berichte der deutschen Chemischen Gesellschaft. 26 Jahrgang, 
(1887), p. 1784—1788. 
55—71. I. C. Russert, Geological History of Lake Lahontan. Table A, p. 176. 
Washington 1885. 
72—75. Warren Upnam, The glacial Lake Agassiz, p. 540. Washington 1895. 
According to Murray’s estimate a cubic mile of average river 
water contains 31805 Engl. tons of sodium sulphate, 26800 Engl. 
tons of sodium nitrate and 16657 Engl. tons of sodium chloride. 
From this we compute 5.88 mgrm of sodium per liter of water. 
The deviation of the real values from this average is very striking, 
even if in the drainage area there exists, certainly, nothing like rock 
salt beds, brines etc. as on the contrary is indeed the case with the 
Weser and the Dwina. Compare e.g. the Amazonas to the La Plata, 
two of the greatest rivers of the Earth. Neithers hould in the latter case, 
of a large quantity of sodium, this merely be considered to be derived 
from the sea; as is apparent from the fact that there is far more sodium 
in the water of the La Plata than could combine with the chlorine. 
In the case of the Mississippi-water taken from the water works at 
New-Orleans, however, we have to think of the derivation of an 
important part of the sodium chloride from the sea, most likely by 
means of the rain, perhaps too, to some amount through the soil. 
