66 BULLETIN 82 . 
TABLE LV— ANALYSIS OF SUSPENDED MATTER CARRIED 
IN FLOOD WATER OF POUDRE RIVER, MAY 22, 1902. 
PER CENT. 
Silicic Acid. 01.482 
Sulfuric Acid... None 
Carbonic Acid. 0.350 
Chlorin. Trace 
Phosphoric Acid. None 
Potassic Oxid. 2 603 
Sodic Oxid. 1.519 
Calcic Oxid. 2.575 
Mangesic Oxid. 1.948 
Ferric Oxid .:. 6.826 
Aluminic Oxid. 7.866 
Manganic Oxid. 0.461 
Moisture. 8.040 
Ignition. 6.485 
Total.100.213 
Nitrogen 0.306 per cent. 
§ 123. Our people do not have opportunity to apply such 
water in irrigating, and there is but little object in calculating 
what the value of an acre foot of it would be, still some may be 
curious to see the figures. The total suspended matter per acre 
foot would be 5,799 pounds. The total potash (K s O) would be 
154 pounds; the total nitrogen, 17 pounds, and the total organic 
matter 377 pounds. 
§ 124. While the suspended matter, in this case, came from 
the foothills, it is not so different in its composition from that 
usually carried by this stream as would be anticipated. 
§ 125. A sample of Arthur ditch water was taken July 5, 1900, 
when the river was high, and the water much more turbid than 
usual. The percentage of suspended matter was found to be only 
0.0016, 16 pounds per million, or 44 pounds per acre foot. 
The sample taken was sufficiently large, over 100 pounds, 
to give entirely trustworthy results. The analysis was made by 
fluxing with calcic carbonate, therefore the lime and magnesia are 
included in the undetermined. The analysis gave the following 
results: 
TABLE LVI.--ANALYSIS OF SUSPENDED MATTER IN ARTHUR 
DITCH WATER, SAMPLE TAKEN JULY 5, 1900. 
PER CENT. 
Silicic Acid. 58.838 
Potassic Oxid. 2.818 
Sodic Oxid . 1.998 
Ferric Oxid. 6.985 
Aluminic Oxid.. 1 < .505 
Ignition . 9 722 
Undetermined. 8.084 
Total.100.000 
