174 BULLETIN OF THE BUSSEY INSTITUTION. 
Charges at Rotterdam. 
Shipping charges and postage, 7.50; Consul’s fees, 6.25; 
Commission, 2% = 6.10 ; ; ; ‘ ; : 19.85 
Florins. : ‘ : 2 i - $24.85 
Final Payment at Boston. 
324.85 florins at 48 cents per florin . : : - $155.93 
Interest on same, 2 months 22 days. : 2.48 
75 days’ interest on remittance ‘ ATT ee 
4.75 
Custom-house fees . : : : : ; 1.50 
Freight and primage from Roper | : : : 38.98 
Boston wharf charges. : : : 6.00" © 
29 empty barrels, répanking hid Biopsidgoh . . 16.20 
Lewis Wharf, for storage and labor é : . 4 4.80 
Total .;,. . : . ‘ : . $228.16 currency. 
Proportionate cost of 10% == $ 62.52 per ton. 
sé 6k 15% STE Na peey en 3 
66 eb 20% = 89,76 * “6 
The foregoing statement represents the cost of importing German 
superphosphate under extremely disadvantageous circumstances. Dr. 
Marquart is a manufacturer of fine chemicals. He neither makes nor 
deals in superphosphates. The Massachusetts Society applied to him 
in this instance merely because of the good standing of his house, 
and because he was known to be in the habit of shipping goods to 
Boston. He, of course, charged such profit as pleased him for his 
trouble in procuring and forwarding the material. Part of the cost 
of handling the superphosphate in Boston could be avoided in future 
by having it properly packed at the factory. Since the importation 
was made, I have obtained the price-list of Emil Giissefeld of Ham- 
burg, a firm devoted to the manufacture of superphosphates and 
the importation of phosphatic materials, such as Baker Island guano, 
and the like. From this list it appears that the prices of warranted 
superphosphates corresponding to Nos. III. and IV., above described, 
were as follows at Hamburg in the summer and autumn of 1873: 
The price of an article made from Baker Island guano, and warranted 
to contain 20% of soluble phosphoric acid, was from 28 to 3 courant 
thalers per 110 pounds English, according to the quantity taken ; 
while the price of an article made from ‘ mineral phosphate,” and 
containing 15% soluble phosphoric acid, plus 1% or 2% of insoluble 
phosphoric acid, was from 24 to 2} thalers per 110 pounds. These 
