Show manufacture of glass beads I 1 besides the invention of mir orrs reticulated glasses for which we have to thank the venel fians the art of making glass bends was wag also first discovered in in the glass gins houses of murano marano and is is practised practiced there at the present P re a ent day on an extensive i scale the th small glass beads are fragments cut from glebes of glass tubing the sharp edges of which are rounded ky by f fu U flon 31 i glass tubes of the proper size are first firs drawn from to feet in length and of all possible 1 colors fia in venice they prepare diffen ent shades and are broken in lengths of two so et these are then cut by the aid of a knife into frai fragments ments of the same length as their diameters they now present the form of beads the edges of which however are so sharp that they would cut the thread on which they have halve to be be 1 strung the edges have consequently to be rounded by fusion and as this operation must be performed upon a great vain number beral at once and they must not be li allowed to stick together they I 1 are wiped with coal dust and powdered clay previous to their being placed in the rei revolving cylinder in which they are heated the finished finis hec beards beads are then arst ed through giaves sorted to te their size and strung strong upon threads by women besides the ordinary knit knitting fing beads another kind is manufactured callad paries a la a lune which are firmer and more expensive these are prepared by twisting a small cord ot glass IKI I 1 softened soften edby by a glass glas blowers lamp round an tron iron I 1 wire I 1 the glass b ads made in imitation of natural I 1 pearls for fbi toilet ornaments the invention oo 00 of f which dates from the year 1658 are very differ ent from the preceding botn both as regards their application mode of production and origin these aye are small solid glass glasa beads of lof the same siz aiza e as native pearls which they are made 0 to o resemble res emble by a coating of varnish and which I 1 gives them a peculiar pearly lustre and color A maker of rosaries by name jaquin was the I 1 first to todi that the scales of a species of fish iaus al buraus of black communicate a pearly hue to water based upon this observation glass globules glo bules were first covered on the outside but at a later period on the inside with this aqueous essence the costly essence however of which only quartet of a pound i could be obtained from the scales of bf was I 1 subjected to toone one great evil that of decay afi ter 1 trying alchon without success m in com le 91 quence of its destroying the lustre lustra ot the substance val al ammoniac was at length found to be the best medium in which to apply the essence a little isinglass is atao also mixed with it which I 1 causes cau ies jt ft to adhere better the pearls are I 1 j blown singly at the lamp a drop of the essence i is s then blown into them through a tin tube I 1 spread out by rolling and thedrie the dried 4 var varnish ats I 1 it is is i then covered in a similar manner by a I 1 layer ayer of wax knap s chemistry |