He remarks that it is impossible to suppose that the particles of mastic are in the form of bubbles.
The apple, pear, cherry and plum thrive well in the north; the orange, lemon, citron and sugar-cane in the south; styrax and mastic in the south-west; and the wheat lands of the Sivas vilayet can hardly be surpassed.
The hard transparent resins, such as the copals, dammars, mastic and sandarach, are principally used for varnishes and cement, while the softer odoriferous oleo-resins (frankincense, turpentine, copaiba) and gum-resins containing essential oils (ammoniacum, asafoetida, gamboge, myrrh, scammony) are more largely used for therapeutic purposes and incense.
This mercantile brotherhood, formerly a privileged class, alone exploited the mastic trade; at the same time the Greeks were allowed to retain their rights of self-government and continued to exercise their industries.
Sir William Abney has found that the above law agrees remarkably well with his observations on the transmission of light through water in which particles of mastic are suspended (Prot.
Quicklime mixed with white of egg, hardened Canada balsam, and thick copal or mastic varnish are also useful for cementing broken china, which should be warmed before their application.
Jewellers' or Armenian cement consists of isinglass with mastic and gum ammoniac dissolved in spirit.
Its figs were noted in ancient times, but wine and gum mastic have always been the most important products.
The spirit called mastic or raki is largely produced.