As it is chiiined by good iiullioiily, that an increase or a decrease 

 of tire potash in the ash of tobacco stands in a definite relation to 

 certain qualities of the latter, it is proposed to discuss this question 

 more in detail hereafter in the annual report. 



10. EEL-GRASS. 



Sent on by the South Bristol Farmers' Club, New Bedford, Mass. 



The composition of the seaweeds in their natural condition is some- 

 what modified by adhesive sea-shells, sea-water, etc. ; no two samples 

 would strictly agree in composition without a previous careful clean- 

 ing of the plants. Time and exposure modify organic and inorganic 

 constituents ; the alkalies and some of the earthy matters are liable 

 to be washed out in part at least by rain; starchy materials, etc., 

 are decomposed apparently at a higher rate than some of the nitro- 

 genous organic matter. — The entire amount of potash, phosphoric 

 acid and nitrogen contained in the organic vegetable matter is finally 

 available. 



Assuming for coarse vegetable organic matter a similar rate of 

 disintegration ; — and allowing the same rates of valuation as in Nos. 

 10 and 18, one ton of 1. would be worth $4.38, and one ton of II. 

 $3.90. 



20. RED LEATHER SHAVINGS. 



Sent on from Marlboro', Mass. 



Moisture at 100° C. 40.59 per cent. 



Nitrogen in Organic matter, 5.12 " 

 Ash Constituents, 0.27 " 



