… in the vegetable fibres, from which they are extracted by solvents. (7) Ocotilla wax , extracted by solvents from the bark of a tree growing in Mexico. (8) …
… or binocular type), and an objective‑holder (generally revolving). The whole is fixed on a stand to which a limb or … Stands (brackets, bases, etc.); eyepiece‑holder tubes and revolving objective‑holder tubes (whether or not with …
