10 
and at least removes definitely any necessary dependence of the 
United States upon foreign sources of supply for potassium salts. 
“Tt is also impracticable to give any close estimate of the 
value of the possible kelp harvest. Assuming that all the po- 
s chloride xtr 
figures for both potash end nitrogen content, the value would be 
$150,000,000.’ 
possible valuation of $90,000,000 for the potassium 
chloride is tn based a its market price before the 
beginning of the i i 
lit tle potassium chips is ete commands a price several 
S as great as this 
r. Milton Whitney, chief of the Bureau of Soils, in an earlier 
“More 
the iodine and other by-products produced simultaneously.” 
Th . ith h 
mechanical difficu es Gee wi rvesting and 
rying the large kelps Ibsequent use as 
fertilizer seem on th f being The report on 
ne rom kelp” ma description and photographs of 
hour, and the machine 
is said to be able to cut ae five tons of fre kelp an hour. 
7.8, 1912, 
