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How to See Under Water

namenting pencil, being sure not to get the The Indians of North America do this by cut- varnish on the white paper. In a few minting a hole through the ice, and then covering utes the picture will be ready to lay on the or hanging a blanket, in such a manner as to panel, and the paper can be removed by wetdarken or exclude the direct rays of the sun, ting it; and when thoroughly dry, it should when they are enabled to see into the water, be varnished like an oil painting. Be particand discover fish at any reasonable depth. ular to purchase only those transfer pictures Let any one who is anxious to prove this, which are covered with gold leaf on the back, place himself under the blanket, and he will for they will show plainly on any colored be astonished when he beholds with what a surface, while the plain pictures are used only brilliancy everything in the fluid world is on white or light grounds. They may be lighted up. A correspondent of the Scientific procured at any stationery store, and the cost American says: "I once had occasion to is trifling. examine the bottom of a mill pond, for which 6197. Lead for Pencils. The easiest I constructed a float out of inch boards, suffi- way of producing not only black lead, but all cient to buoy me up; through the centre of sorts of pencils, is by the following process, this float I cut a hole, and placed a blanket which combines simplicity, cheapness, and over it, when I was enabled to clearly dis- quality. Take white or pipe clay, put it into cover objects on the bottom, and several lost a tub of clear water, to soak for 12 hours, tools were discovered and picked up. I am then agitate the whole until it resembles satisfied that, where water is sufficiently clear, this latter plan could be successfully used for searching for lost bodies and articles."