Agathosma

Twenty-two species. Green-house evergreen 6hrubs. Cuttings. Peat and loam.

Agathyrsus

Seven species. Hardy herbaceous. Cuttings and divisions. Common soil.

Agati

Two species. Stove evergreen trees. Cuttings. Peat and loam.

Ageratum

Six species. Chiefly hardy annuals. Seed. Light, rich soil.

Agnostus

Agnostus sinuata. Green-house evergreen tree. Cuttings. Sandy peat.

Agrimonta

Agrimony. Nine species. Hardy. Division. Common soil.

Agromyza

Agromyza viola. Pansy Fly. It attacks the flower by puncturing the petal, and extracting the juice; the puncture causes the colouring matter to fade. This very minute fly is shining black, bristly, eyes green, head orange. It appears in May and lives throughout the summer. Where it deposits its eggs is unknown. - Gard. Chron.

Agrostemma

Four species. Hardy herbaceous. Division. Common soil.

Ailantus

Two species. Hardy deciduous trees. The glandulosa is of rapid growth, and thrives admirably on light thin soils, where many forest trees do not succeed - it is objectionable by reason of suckering, and to many from the unpleasant odour of the flowers. Cuttings. Loamy peat.

Air

Atmospheric air is uniformly and universally composed of Oxygen. ... 21 Nitrogen ... 79

Every 100 parts, even in the driest weather, containing, in solution, one part of Water; and every 1000 parts having admixed about one part of Carbonic Acid. The average proportions are:

Air......9S.9

Watery Vapour . 1.0 Carbonic Acid Gas 0.1

All these are absolutely necessary to every plant to enable it to vegetate with all the vigour of which it is capable; and on its due state of moistness depends, in a great measure, the health of any plant requiring the protection of glass. See Leaves, Roots, Stove.

Aitonia

Aitonia eapensis. Green-house. Cuttings. Rich mould.

Ajuga

Bugle. Eleven species. Hardy. Division or seed. Sandy peat or loam.

Akee-Trre

Blighia sapida.

Alanghjm

Two species. Stove evergreen trees. Cuttings. Sandy loam.

Albuca

Nineteen species. Greenhouse bulbs. Offsets. Sandy loam and peat.

Alburnum

The soft white substance which in trees is found between the liber or inner bark and the wood, and in progress of time acquiring solidity, becomes itself the wood. A new layer of wood, or rather of alburnum is added annually to the tree in every part, just under the bark.

Alchemilla

Ladies' Mantle. Eleven species. Chiefly hardy. Seeds or division. Common soil.

Alcove

Alcove is a seat in a recess, formed of stone, brick, or other dead materia], and so constructed as to shelter the party seated from the north and other colder quarters, whilst it is open in front to the south.

Alder

Alnus.

Aletris

Two species. Hardy herbaceous plants. Offsets. Peat or leaf soil:

Aleurites

Two species. Stove evergreen trees. Cuttings. Loamy soil.

Alexandrian Laurel

Rus-cus Racemosus.

Alhagi

Manna. Two species. Green-house plants. Young cuttings or seed. Sandy loam and peat.