Examining Bottoms Of Wells

It is not generally knowo, we tliink, how easy a matter it 19 to examino the bottoin ofawells, cistern, or pond of water by tlio use of a comnion minor. - When the sun is shing brightly. hold B mirror so tint the rcflcctcd rays of Rgbt wiü fall intd the water. A. bright sp t tc'ill be een -at the bolto-.n, sj light as to show the smilk'xt object rery pUinly.- H} f.liis mean we have ezamioed the bottom of wella fifty foct doep, when half fiill or more of water. The smallest straw, or oibor small object, eau be porfeotly soen fpom. tho surfnee, In tho Siiim: w;iy, oi-.e eau examino the bottom of pondsaud rivors, if the water 1 whnt leur, and not agitated bj viada M rjpid mot ion. If a wcll or eistoni be uuder cover, nr slmdcd by building so that the suulight will not Lall near the j ing. it is only necessary to einploy two wirrors, USÍHJ5 oiie to t'i roileet ilie liglit to the '.pening, and auotbor seiul U down perpeudiealar into the water. Liglit may be tbrown fifty or a bundrod yards, to jhö precise epot dosirsd, ;iid tlien refled downward. vve liave used the uiirrors witb succ-ess to refloct tbo light around a !i;:!'i to a South n induw tlltougb two 1 ooius. and tlien into a eistern under tho ort!i nidfl Of the house. Half 1 jozcú reflectors o! the light may be ■. tbmigh eaoh mirror dirninisliés the fcrülinuuy ..i'thu light. Let any one not Familiar with this try it, and he will íid it not only useful, but a picasant expanmorjt. Et will perhaps, revèal amtsa.