7 
incident, among other considerations, led the United States 
Congress to ins the Bureau of Soils of the Department of 
Agriculture to investigate the possibilities of developing within 
e boun the d State: pply of potas at 
uld meet the domestic need: us make th d 
P Pp thi pote ium 
compounds, but thus far the t of re it puts these rocks 
outside of the commercial onsibilities as a source of pot 
or the beercenet and far er. 
ee 
i 
bh 
f : 1 1 
established f d fertilizers for alte soil, and they be- 
} 
Pacific coast 
and to derenmine with some degree of ecitay the amount of 
potassium salts contained by them. One of the most important 
of these great kelps of the Pacific is baton known also as the 
p,’ ‘ cabba: “bull 
“bla kelp,”’ the ‘‘sea-otter’s cab elp,’’ and 
the “ribbo: o is kelp forms in oa es ext gro’ 
or es Point Concepcion, near Santa Barbara, an 
northward to the region of the Aleutian Islands of 
plant grows ete to the bottom in water that is ee 10 to 
100 feet deep it thrives especially where there are strong 
currents of wat c e movem 1 sa 
er or active wav an 
long slender stalk, terminated above by a more or less globose 
hollow enlargement that is filled with air or gas, the chemical 
