Handy man's workshop and laboratory . n a strip ofwood sufficiently wide to sup-port the glass two pieces of wood toeither side of the board, theseto run up to where the twolong strips terminate. Inthis way will be formed thethree sides of a little box. Apiece for the top of the boxmust have an archwayscooped out in the center toallow for the passage of thetube. A square piece of thinwood may be cut to form thelid of the box. After apply-ing some stain to give thewood a finish the frame iscomplete. i The next matter for con-sideration is the filling of thesmall glass receptacle
Handy man's workshop and laboratory . n a strip ofwood sufficiently wide to sup-port the glass two pieces of wood toeither side of the board, theseto run up to where the twolong strips terminate. Inthis way will be formed thethree sides of a little box. Apiece for the top of the boxmust have an archwayscooped out in the center toallow for the passage of thetube. A square piece of thinwood may be cut to form thelid of the box. After apply-ing some stain to give thewood a finish the frame iscomplete. i The next matter for con-sideration is the filling of thesmall glass receptacle and thetube with mercury. In fill-ing the tube a funnel formedout of a sheet of paper will be found useful. When the tubeis full, place the finger over the orifice. Then invert the tube,and without admitting any air immerse the end in the mer-cury contained in the receptacle. This is likely to be rather adifficult undertaking, and perhaps the_best way of all to accom-plish it is to tie a piece of skin or leather very tightly over the. Fig. 167—The tube immersed in themercury receptacle HANDY MAN S WORKSHOP AND LABORATORY 187 upper end of the tube after it is full; then immerse, and finallycut away with a penknife the twine which binds the skin. If thishas been accomplished without letting in any air, the column ofmercury will be observed to fall, several inches. If atmosphericbubbles are to be seen working their way upward, the tube mustbe refilled.
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
