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