198 Cox. 
It is only in unusually dry regions and in protected places that 
guano exists unleached. In many places, as seen by the above 
analyses, Philippine guanos have been deprived of their soluble 
ingredients, such as salts of ammonia and uric acid, which give 
them their chief value. 
At the present time nearly all fertilizers are imported into the 
Philippine Islands from the United States and Europe. The 
cost of transportation and handling must be added to the original 
price. I see no reason why Philippine guanos should not be 
largely utilized, and as a basis of valuation I shall quote the 
following prevailing prices for fertilizers at California terminals 
from which shipment could be made to the Philippine Islands.* 
Schedule of trade values, 1911-1912." 
Value in 
Constituent. CaaS ioe 3 
Nitrogen'from(blood)=2="=-2- U 2225. eae eee ee 2356 4,72 
Nitrogen from tankage and bone___- == 22.8 4.56 
Nitrogen from ammonia sulfate ___ oe 17.9 3.58 
Nitrogen from nitrate of soda_____ = 14.1 2.82 
Phosphoric acid from tankage __-________--------------------- 3.8 0.76 
Phosphoric acid from bone (high in phosphoric acid, low in 
mitrogen) ie iS soto ee wen tl alee oa ee eee 5.0 1.00 
Phosphoric acid from bone (low in phosphoric acid, high in 
nitrogen) 22222 22 66 so ea ee eee 4.6 0. 92 
Phosphoric acid from bone and superphosphate ________ = 5.0 1.00 
Available phosphoric acid from rock superphosphate_-__ ms) 4.7 0. 94 
Phosphoric acid from Thomas Phosphate Powder -____- = 4.2 0. 84 
Potash from sulfate of potash_____-__-___ --___-_-__--___ 5.7 1.14 
Potash from muriate of potash 4.9 0.98 
8 The base prices from which the above schedule is deduced are obtained as follows: 
Blood and tankage, Chicago market quotations and freight to Pacific Coast terminals. 
Bone meal, California manufacturers’ estimates. 
Sulfate of ammonia, New York quotations and a differrential freight rate based on Chicago 
production and delivery to California terminals. 
Nitrate of soda, California manufacturers’ estimates and actual sales. 
Potash salts, New York quotations and differential freight rate (by sea) to California points. 
Bone superphosphate, local manufacturers’ estimates. 
Thomas Phosphate Powder, local manufacturers’ estimates. 
Rock superphosphates, factory price, San Francisco Bay, and freight to Southern California 
points. 
To these prices the freight rate from California terminals to 
the Philippines would have to be added in order to determine the 
*Burd, John S., Commercial Fertilizers, Bull. Univ. Cal. Agr. Exp. Sta. 
(1911), 221, 38. 
