Show AN interesting CHEMICAL experiment any child can do it the result Is almost like 1 ake magic useful too anything in the nature of a chem cheat leal acal experiment Is ain always nys interesting and usually educative here la Is adhn pie experiment which any child can perform and which Is instructive in a very practical way get a bit of white lead about the size of a pea a piece of charcoal a common candle in a candlestick and a blow blowpipe pipe scoop out a little h ollow hollow in the charcoal to hold the white lead thou then light the candle take the charcoal chai coal and lead in ono one hand and the blow blowpipe pipe in the other with the large end of the blowpipe between tho the lips blow the flame of the candle steadily against the bit of white lead on the charcoal and it if the white lead Is it mill presently resolve itself into little shining globules glo bules of metallic lead under udder the intense heat of the blow pipe leaving no residue if however the white lead Is adulterated in the slightest degree it will not lot wholly change into lead so it will he be seen that this experiment Is not only an entertaining chemical demonstration but also of practical use in the home white lead Is the most important ingredient of paint it II should bo be bought pure and aerated and mixed with pure linseed oil 11 that Is the best paint the above easy experiment enables anyone to know whether the paint Is the lind which will wear or not the national lead company guarantee that white lead taken from a 1 bearing their I 1 dutch boy painter trademark trade mark will prove abao cutely under the blowpipe test and to encourage people to make tho the test and prove the purity of paint before using it they will send free a blowpipe and a valuable alu able booklet on paint to anyone wilting them asling asking for test equipment address na lional lead company woodbridge building new york city |