124 
Grains per Gallon. 
Total solid matter 1959’510 
Organic matter, combined water, &c 1*295 
Fixed saline matter 1958'215 
The fixed saline matter is composed of 
Magnesium carbonate 97*874 
Sodium carbonate 251*598 
Potassium sulphate 1202*559 
Sodium sulphate 153*566 
Sodium chloride 235*311 
Nitrates and Nitrites Absent. 
Loss 17*307 
1958*215 
The following gives the proportions of free carbonic dioxide 
and volatile saline matters : — 
Grains per Gallon. 
Free carbonic dioxide 17*110 
Ammonium sesqui-carbonate 279*380 
Ammonium chloride 4*406 
Nitrogen, presumably existing in combination in 
some organic compound 0*370 
Oxygen required by potassium permanganate test.. 1*454 
There are many remarkable points about this drainage 
water. 
First. Although it comes directly filtering from what 
originally was most noxious organic matter, it is undoubtedly 
free from any of those substances, of which, albumen may be 
taken as a type. 
Second. That all these organic matters have been practically 
completely decomposed by oxidation into carbonic acid, water, 
and ammonia, and the drainage remains charged with enor- 
mous quantities of these products. An idea of the quantity 
of carbonic dioxide present may be had by saying that 100 
c.c. of the water contains 268*54c.c. of this gas when mea- 
sured at 0°C. and under a pressure 760m.m. of mercury. 
Third. That although the oxidation of the organic matter 
had been so complete, yet the water was free from any 
trace of nitrates or nitrites. 
Fourth. That the water was free from any trace of lime 
