Show ac acoustic ic experiment ent A very pretty experiment tn in accous acoua ties acs ics can bo be achieved by tile the use ofa childs tin horn tie a sheet hi he thin paper irmay over the big end hold tho the horn so BO that tile the paper Is level scatter over nver it a little fine sand or alyc powder then sins sing a noto note into tile the horn hom you will find that tile the powder has formed itself into an intricate onto gemmet figure it was in n tills this way thi that nt tile lie first voice pictures pictured were obtained |