The Absolute Strength Of A Well-Glued Joint Is Given As Follows In Pounds Per Square Inch

Across the grain.

With the grain,

Beech,

2133

1095

Elm,

1436

1124

Oak,

1735

568

White wood,

1493

841

Maple,

1422

896

It is customary to use from 1/6 to 1/10 of the above values to calculate the resistances which surfaces joined with glue can permanently be submitted to with safety.

Glue, Fire-proof, -A handful of quicklime mixed in 4 ozs. of linseed- oil and boiled to a good thickness makes, when spread on plates and hardened, a glue which can be used in the ordinary way, but which will resist fire.

Glue, Liquid. Dissolve the glue in an equal amount of strong hot vinegar, adding 1/4 alcohol and a little alum. Will keep indefinitely.