326 BOARD OF AGRICULTURE. 



nated " Crude Guano," and are usually sold in their original 

 packages as imported from Peru. The following three 

 things are guaranteed to its purchasers : — 



Firsts That the article is pure and genuine Peruvian 

 guano. 



Second, That it has not been damaged by sea-water. 



Third, That it will average 10 per cent of ammonia, 

 allowing a variation of from 9.5 to 10.5 per cent of that 

 compound. 



This guano is known to dealers as " Standard Guano." 

 Both samples, although differing in some particulars, were 

 in conformity with the three conditions guaranteed. 



IV. 



No. I. Peruvian Guano. — Lotos. 



(Collected of Messrs. C. L. Bartlett & Co., Boston, Mass.) 



Per cent. 



Moisture at 100° C 11-78 



Nitrogen (equal to 7.15 per cent of ammonia) . 5.96 



Phosphoric acid 16.24 



Potassium oxide 2.23 



This quality of guano is sold at fifty-six dollars per ton of 

 two thousand pounds, which is a fair price at the present 

 condition of our fertilizer market. 



V. 



No. II. Peruvian Guano. 



(Collected of Messrs. C. L. Bartlett 8s Co., Boston, Mass.) 



Per cent. 



Moisture at 100° C 12.66 



Nitrogen (equal to 4.16 per cent of ammonia) . 3.43 



Phosphoric acid 13.58 



Potassium oxide 1-30 



The price of this kind of Peruvian guano has been thirty- 

 eight dollars per ton of two thousand pounds, which is a 

 quite reasonable charge, considering our general market- 

 prices. As the system of selling Peruvian guano has been 

 greatly changed of late, in consequence of the introduction 

 of selling by analysis, and with a guaranty of the stated 

 composition of the articles offered for sale, I consider it in 

 the interest of a safer purchase on the part of those who 

 wish to use Peruvian guano to insert here a passage from 



