Building Materials
Putty is

Used for fixing glass panes
Made with finely powdered chalk and linseed oil
Softened by a solution of pearl ash and quick-lime soaked in water
All listed here

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Building Materials
Sapwood consists of

Innermost annular rings around the pith
Portion of timber between heartwood and cambium layer
Thin fibre which extends from the pith outwards and holds the annular rings together
Thin layers below the bark

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