HELPFUL HINTS. 433 



when the box is lined with zinc, have a tube about seven 

 inches long securely fastened in this hole. There must be 

 no crevice into which the water can soak. A cover, which 

 also should be zinc-lined, must be fitted to the box. Then 

 j^rocure some charcoal, broken finely, and fill the larger 

 box (in which a hole has first been bored to receive the tube 

 from the inner box) with the powdered charcoal to a depth 

 of about four inches. Place the smaller box on the char- 

 coal, and fill the space between the sides of the two boxes 

 with the charcoal, up even with the inner box, and cover 

 the space with a neat strip of board. This will give you a 

 box with double bottom and sides filled with charcoal, the 

 very best of non-conductors. With an outer cover, the 

 size of the larger box, and four blocks to raise the whole 

 from the floor, so that a pan may be placed under the tube 

 to catch the water which comes from the melted ice, the 

 whole will be done, except to add shelves as desired. 



An improvement on this plan could be made by arrang- 

 ing the boxes so that the ice would be at the top, with the 

 shelves below, the outer cover becoming a door, and the 

 top hinged to admit the ice. 



How to preserve food with sulphur is another good thing 

 to know, especially where ice is not obtainable. 



It is very simple, yet effective. Take an ordinary wood- 

 en box, make the joints air-tight, hinge the lid and make 

 that also air-tight ; then bore a series of holes around the 

 sides, inside, not through, but deep enough to drive wood- 

 en pegs into. On these pegs hang any meat, fish or game, 

 that you wish to keep ; place in the box a tin plate with 

 some sand and a few live coals, sprinkle on the latter a 

 little sulphur, close the box and the work is done. Food, 

 cooked or raw, can be kept in this way for a week or more. 

 There is no taste or smell. 



