The tree was evidently hollow throughout its length; but perhaps some portion of the alburnum still remained intact.
This consists in cutting a ring round the tree with axes through the bark and sapwood, or alburnum, into the brown wood beneath.
It permits the passage of sap and is known as sapwood (alburnum).
A new layer of wood, or rather of alburnum, is added annually to the tree in every part just under the bark.
Darwin possesses the epidermis of poetry but not the cutis; the cortex without the liber, alburnum, lignum, or medulla.
alburnum, al-burn′um, n. in trees, the white and soft parts of wood between the inner bark and the heart-wood.
The mixture of bark and alburnum was next placed upon a smooth stone, and mashed into a fibre of a yellowish colour.
It is through the alburnum that the ascending sap chiefly flows.