CONTENTS. 



PAGE 

 LECTURE I. ON FARMYARD MANURE .. 3 



II. ON THE COMMERCIAL AND AGRICULTURAL VALUE OF 



ARTIFICIAL MANURES .. .. .. .. ..28 



III. ON THE COMPOSITION OF FERTILE AND BARREN SOILS .. 44 



IV. ON THE NUTRITIVE VALUE OF DIFFERENT OIL-CAKES, 



AND SUBSTITUTES FOR OIL-CAKES 01 



