ENEMY SECRET NO LONGER

Taihape Daily Times, 4 July 1919, Page 6

ENEMY SECRET NO LONGER

HOW “MOTHER OF PEARL Is MADE. x 2000 EXPERIMENTS. I . -———_. 1 The German secret of making mli~ ‘ fieial mother of pearl has 139.3-,l‘ m,-.-covered by Mr. J. W, H_ Dow, I,=OnCW of the Royal Society of Arts’ cannon street_ The imitation is Qx(jC]{out} and reproduces all the beautifying 11- ‘ ridiscent colour effects Of m'>thel' of pearl itself. Mr. Dew said: The colours are fix ed on a gelatine base having :1 cc-i?u~ loid film, and are Chemically obtained by interference with the illeid-31130 of rays of light. The Ge:-m.2.n.s were sending to the c”o'u'r‘f'El'y thousundso of sheets of this material before" the war, and when war broke out, I was asked by the Board of ’l‘rade if I could supply the article. No one in this country knew the secret. and forthwith I began my endeavourf, to discover it. Before I succeeded I made over 2000 experiments‘ whirh extended over a period of four and a half years, and were conducted at considerable expense to myself. The material will have many uses. It will ‘produce beautiful effects when made

il;to_ sequins and other forms of dress omanlclltation. It may also be utilised .f.o_l'.i.a,dvcl'tising and trade slgns generaHy,.._cuff links, fancy mltt'.n3s,;'allci av variety of other useful articles_ The nlQ_ther‘ofbpeal{l effects T2lll be gradua_e.d‘ a_liso_,‘ on the polished surface of shells. .