430 ANNUAL KECORD OF SCIENCE AND INDUSTRY. 



60 grains of carmine with the solution. Mordant the fabric 

 with a mixed solution of acetate of alumina and tin salt, and 

 write upon it, when it is perfectly dry, with the ink. 18 C, 

 March 5, 1876, 160. 



INCEEASING THE ADHESIVENESS OF COUET-PLASTER. 



Court-plaster applied, as is usually done, by moistening it 

 with the tongue, does not adhere well, on drying, to the un- 

 abraded skin adjoining the wound. By moistening the back 

 of the plaster after it has been applied with glycerine, or, 

 still better, by moistening the adhesive side of it when about 

 to apply it with water to which one tenth of glycerine has 

 been added, instead of with the tongue, the plaster will be 

 kept adhesive and soft. 4 6', VIII., 1875, 72. 



WATEE-PEOOFING UMBEELLAS, ETC. 



Fischer, of Erfurt, suggests that, by the following treat- 

 ment, umbrellas of alpaca, etc., can be rendered water-proof 

 without impairing their color, flexibility, or durability, so 

 that they will not become heavy with rain, and can be put 

 away immediately after use without necessity for drying : 

 Dissolve one part of shaved paraffin (a piece of paraffin 

 candle will answer) in 10 to 15 parts of benzol by shaking 

 it in a bottle. Pour the solution over the whole of the ex- 

 panded umbrella rapidly in spiral lines, beginning at the top. 

 Great care should be taken not to conduct the operation 

 near a lamp or stove. 8 C, August 26, 1875, 312. 



IMITATION OF STEAW, LEATIIEE, AND WICKEE-WOEK, 



Imitations of straw, leather, wood, and wicker-work articles 

 are produced by Lowenberg by the following process : A 

 mould of the article to be imitated is made by pouring around 

 it a mass consisting mainly of glycerine and glue. Into 

 this, when firm, a liquid consisting chiefly of glue, glycerine, 

 oil or soap, and some pigment, is poured, and before the 

 whole of it sets the larger part is poured out again, leaving 

 but a comparatively thin film, which constitutes the imita- 

 tion when firm. Adhesion to the mould is prevented by 

 treating it with chromic acid or acetate of iron. 6 (7, &ep- 

 tember 9, 1876, 358. 



1 



