Part 29 (1/2)

=Glands.= A secreting surface or structure; a protuberance having the appearance of such an organ.

=Glaucous.= Covered or whitened with a bloom.

=Grain.= Direction or arrangement of the fibres in wood.

=Grubs.= The larvae of wood-destroying insects.

=Gymnosperms.= Plants bearing naked seeds; without an ovary.

=Habitat.= The geographical range of a plant.

=Heartwood.= The central portion of tree.

=Hollow-horning.= Internal checking.

=Honeycombing.= Internal checking.

=Hot-blast kiln.= A drying arrangement in which the air is blown through heating coils into the drying room.

=Humidity.= Damp, moist.

=Hygroscopicity.= The property of readily imbibing moisture from the atmosphere.

=Indefinite.= Applied to petals or other organs when too numerous to be conveniently counted.

=Indigenous.= Native to the country.

=Involute.= A form of vernation in which the leaf is rolled inward from its edges.

=Kiln-drying.= Drying or seasoning of wood by artificial heat in an inclosed room.

=Leaflet.= A single division of a compound leaf.

=Limb.= The spreading portion of the tree.

=Lumen.= Internal s.p.a.ce in the spring- and summer-wood fibres.

=Median.= Situated in the middle.

=Medulla.= The pith.

=Medullary rays.= Rays of fundamental tissue which connect the pith with the bark.

=Membranous.= Thin and rather soft, more or less translucent.

=Midrib.= The central or main rib of a leaf.