FAMILY FUN

New Zealand Tablet, Volume XXXV, Issue 7, 14 February 1907, Page 38

FAMILY FUN

Here is another way of telling a number thought of '—Multiply the number thought 1 of', say 5, by 3—15 ; add I—l 6 ; multiply by ,3—48 ; add the number thought of, 5, plus 48—53.' Ask the result, which must end with 3, which you strike off mentally, and declare the number to have been "the .pther figure, in this case 5. Musical Figures Resulting 'from Sound. Cover the mouth of a wine-glass with a thin skin and a, layer of fine sand,. The vibrations excited" in the air by the sound df a musical inst|i:umen.t,held within a few inches jof the membrane,,, will form the sand on its sur- . face in regular lines and figures with astonishing celerity which vary with the soiund produced. - x In like manner, if a fiddle-bow, be drawn against the -edge of a glass goblet, -two parts 'filled with colored water, the "surface, will~sho.w a pleasing figure, composed of half ,;a/ "dozen fans, or if. the vessel .is large enough, but also affected by, the pitch of the note - produced. . - - 'To Tell the Distance of Thunder.— Allow a little more than "five seconds for -a mile in reckoning how many seconds elapse between. when- you see the lightning and hear the thunder. If you" have no timepiece, fbu pan tell by the pulse-beats, giving five thousand felt to sisf beats.