| Show HOW TO MAKE A TRUTHFUL barometer rma take takee a clean glass bottle aud and put it in a small email quantity of finely pulverized alum aluin then fill up hie file bottlo with of wine the tile alum will be perfectly dissolved by the alcohol and in clear cleaf weather tile the liquid will vill be as uati transparent as the purest water oil on the approach ofrain ol 01 rain rhin or cloudy weather the tho alum aluin will be isible visible in a flaky spiral cloud in tila the centre of the fluid reaching from front the bottom to the surface thusa cheap simple and beautiful barometer is placed thin llie ilia reach of all who wish to possess one for simplicity of construction e this is altogether superior to the frog ba barometer r in general ese tse use in germany |
