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tivating the soil. ALKALI--the direct opposite of an _acid_, with which it has a tendency to unite. ALUMINA--the base of clay. ANALYSIS--separating into its primary parts any compound substance. CARBONATE--a compound, consisting of carbonic acid and an alkali. CAUSTIC--burning. CHLORIDE--a compound containing chlorine. CLEVIS--that part of a plow by which the drawing power is attached. DECOMPOSE--to separate the constituents of a body from their combinations, forming new kinds of compounds. DIGESTION--the decomposition of food in the stomach and intestines of animals (agricultural). DEW--deposit of the insensible vapor of the atmosphere on cold bodies. EXCREMENT--the matter given out by the organs of plants and animals, being those parts of their food which they are unable to assimilate. FERMENTATION--a kind of decomposition. GAS--air--aeriform matter. GURNEYISM--see _Mulching_. INGREDIENT--component part. INORGANIC--mineral, or earthy. MOULDBOARD--that part of a surface plow which turns the sod. MULCHING--covering the soil with litter, leaves, or other refuse matter. See p. 247. NEUTRALIZE--To overcome the characteristic properties of. ORGANIC MATTER--that kind of matter which at times possesses an organized (or living) form, and at others exists as a gas in the atmosphere. OXIDE--a compound of oxygen with a metal. PHOSPHATE--a compound of phosphoric acid with an alkali. PROXIMATE--an organic compound, such as wood, starch, gum, etc.; a product of life. PUNGENT--pricking. PUTREFACTION--rotting. SATURATE--to _fill_ the pores of any substance, as a sponge with water, or charcoal with ammonia. SILICATE--a compound of silica with an alkali. SOLUBLE--capable of being dissolved. SOLUTION--a liquid containing another substance dissolved in it. SATURATED SOLUTION--one which contains as much of the foreign substance as it is capable of holding. SPONGIOLES--the mouths at the ends of roots. SULPHATE--a compound of sulphuric acid with an alkali. VAPOR--gas. KETCHUM'S PATENT MOWING MACHINES [Illustration] =The greatest Improvement ever made for Simplicity, Durability, and Ease of Action.= It is now beyond a question, from the complete triumph over all other machines this season, that this is the _only_ successful Grass Cutter known. It is in fact the _only_ machine that has ever cut _all kinds of
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