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TALKS ON MANURES. 



I. TABLES FOR CALCULATING THE EXHAUSTION AND EN- 

 RICHING OF SOILS. 



A.-IIARVEST PRODUCTS AND VARIOUS MANUFACTURED ARTICLES. 



Average quantity of water, nitrogen, and total ash, and the different ingredi- 

 ents of the ash in 1000 Ibs. of fresh or air-dried substance. 



