Catechism of Agricultural Chemistry and Geology

advantage AGRICULTURAL CHEMISTRY ammonia animal applied become body bone-earth bones bottle burns called carbonic acid carried clay collect common common salt compost consist contain corn crops draining drink dung elements employed especially exhibit exists experiment explain farm-yard farmer fermentation fertile fire give given glass gluten grass lands greater green grow heavy hydrogen illustrate important inorganic iron keep kind land large quantity leaves less light lime limestone liquid live magnesia manure marl matter meaning mixed naturally nitrogen oats obtain organic food oxide oxygen phosphoric acid piece plants ploughed potash potatoes pouring powder PRACTICAL principal produced profit proportion pupils quicklime raised referring require roots sand serve soda soil starch straw substances supply surface taper taste teacher thing turnip usually vegetable waste weight whole wood young