VARIETIES OF GUANO. 327 



a commercial circular of the agents of the Peruvian Govern- 

 ment for the United States, — Messrs. Hobson, Hurtado, & 

 Co., of New- York City, No. 63 Pine Street, — which contains 

 the future basis of sale : — 



"BRANDS OF GUANO. 



" The following are the brands or designation under which guano is 

 placed on the market : — 



"No. I. Peruvian guano, * Standard,' or * Guanape.' 

 No. I. Peruvian guano, ' Lobos.' 

 No. I. Peruvian guano, * Guaranteed.' 

 No. I. Peruvian guano, * Kectified.' 

 No. n. Peruvian guano. 



"As we have said before, each and all of these are genuine pure 

 guanos, with the exception of No. I. Rectified, which is guano treated by- 

 sulphuric acid as will further on be explained. [See, for details, my 

 previous reports, U. in particular. — G.] These guanos are all put up 

 in burlap bags, bearing on one side the following lettering : — 



" ' Warranted No. — Peruvian 



Guano, 



Imported into the 



U. S. by 



Hobson, Hurtado, & Co., 



Agents 



for the 



Consignees of the 



Peruvian Government.' 



" On the other side of the bag will be found the marks that will 

 enable the purchaser to distinguish to which brand each bag belongs, and 

 which we shall proceed to describe under the heading of the respective 

 kind." 



For further particulars I have to refer to the circular, 

 which, it must be conceded, discusses its subject in an able 

 and an exhaustive manner. Farmers do well to look for the 

 analytical statements of the guaranteed composition; for the 

 latter will vary from time to time; and thus not less the price 

 will differ even for the same brands or designations under which 

 the guanos are placed on the market. 



Ammonia in Peruvian guano, with the exception of the 

 " rectified," is charged seventeen cents and a half per 

 pound; phosphoric acid, entire amount present, nine cents 

 per pound ; potassa, entire amount present, seven cents and 

 a half per pound. 



