| Show AN interesting CHEMICAL experiment any child can cam do atthe Is 1 almot almost like mago magic useful too anything in the nature of 0 a chemical experiment la Is always interesting and usually educative here la Is asim a simple experiment which any child can perform and which Is instructive Instruct lie tn in a very practical way get a bit of walta lead about the sue size or of a pea A piece of charcoal a common candle la in a candlestick and a blowpipe blow pipe scoop out a little hollow in the charcoal to hold the NN white bite lead then light ht the tha candle take the charcoal and lead in one hand band and the blow pipe in the other oher mith vi ath the large end of the blowpipe between the lips blow the flame of the candle steadily against the he bit of white lead on the charcoal and it the who lead Is cure it will mill pres prea antly itself into little shining globules glo bules of metallic lead under the intense heat of the blow pipe leaving no residue if boA however ever the bilte lead la is adut adul aerated in the slightest degree it will ill not wholly change into lead so it will be seen been that this experiment to Is not only an entertaining chemical demonstration but also of practical use in the home white lead to la the most important tant of i tin lint t it should be bought pure and aerated and mixed with pure linseed oil that Is IB tho the hot paint 1 iho he above easy experiment enables am ana one to know whether the paint la Is the kind which will mill wear or not the national lend lead company guir antee that white hite loail lead taken from froin a package bearing their dutch doy boy painter trademark will mill prove abs 0 cutely pule under the blowpipe test teat and to encourage people to mike make the tha test and prove the purity of paint before using it the will send free ft a blow pipe and a valuable booklet on paint to anyone writing them hem asking for test equipment address na dional lead company woodbridge building new york city |
