11 



One hundred parts of dry matter contained : 



Potassium oxide, 6.21 3.76 



Sodium oxide, 0.68 0.20 



Calcium oxide, 4.76 4.15 



Magnesium oxide, 1.14 1.53 



•Pliosphoric acid, 0.87 0.50 



Sesqui oxide iron, not determined. 0.16 



Valuation per ton of 2,000 pounds for fertiltziug purposes. 



$16.00 $14.28 



Analysis 163 is republished from last year's report for the purpose of 

 enabling a comparison of the composition of the refuse stems of the 

 entire tobacco plant of the Connecticut Valley with that of the leaf- 

 stems of Havana tobacco, 164. The valuation is based on the prices 

 of the past year ; — it is safe to count one-tenth less, at the prices of 

 the present year. 



165. 



RAW CUBA GUANO. 



Sent on from Boston, Mass. 



166. 



DRIED CUBA GUANO. 

 Sent on from Boston, Mass. 



Moisture at 100° C, 

 Total phosphoric acid. 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen (in organic matter). 

 Nitrogen (in ammonia salts). 

 Nitrogen (in nitrates), 



Valuation per 2000 lbs.. 



$24.00 



$34.49 



167. 



AMERICO A 1 PERUVIAN GUANO. 



