Popular Science Monthly 



609 



An Accident Chart Showing 

 Injuries to Miners 



THE illustration is from a diagram pre- 

 pared by the Bureau of Mines for the 

 use of surgeons and hospitals in the mining 

 districts in the selection of necessary sup- 



Diagram showing the percentage of injur- 

 ies to the different parts of the body 



plies. The diagram shows that practically 

 30 per cent, of accidents in coal mines re- 

 sult in injuries to the legs and about 14 

 per cent, to the hands, while accidents to 

 other parts of the body are shown in rel- 

 ative percentages. 



A Rabbit Trap Made of Ordinary 

 Drain Tile 



A CLEVER plan for catching rabbits is 

 recommended by the Department of 

 Agriculture. It is a trap which catches the 

 rabbits alive, and almost any boy can con- 

 struct one quickly. 



The materials required consist of a 12-in. 



The tiles are set in the earth so that 

 a hiding-place is made for the rabbit 



sewer-tile with a 6-in. side outlet and two 

 lengths of 6-in. tiles. The long end of the 

 larger tile is set downward in the ground so 



that the small side outlet is below the sur- 

 face, as shown. The two small tiles are 

 connected with the side outlet so that the 

 opening will extend out to the surface. 



The tiles are well covered with soil to 

 exclude all light, and a close fitting cover is 

 placed over the upper end of the large tile. 

 The open end of the small tile may be sur- 

 rounded with a few small stones and brush 

 to make it inviting to the rabbits. 



The rabbits are free to pass in and out of 

 the dens thus made. When they are 

 located in one of them it is an easy matter 

 to close up the entrance and take them out 

 of the large tile by raising the cover. 

 Such traps are especially, suited to open 

 places or on prairie lands where rabbits 

 cannot find natural hiding-places. 



A WaU Book Shelf of "Built-in" 

 Appearance 



WHILE almost any kind of wood can 

 be used in the making of this book 

 shelf, it is well to select the kind of wood 

 that will match with other pieces of furni- 

 ture, or the finish of the room. If made of 

 the same wood as the doors and casings it 

 will have a "built-in" appearance and there 

 will be no abrupt contrast with articles 

 of furniture. The finished shelf is shown in 

 Fig. I. The material list is as follows: 



1 base, 2 ft. long, 6}>^ in. wide and ^ in. thick 



2 facing pieces, 6 in. long, 5^^ in. wide and 



^ in. thick 

 I top back rail, 123^ in. loi^ i/^ in. wide and 

 ^ in. thick 



1 bottom back rail, 12)^ in. long, i in. wide 



and % in. thick 



2 top end rails, 6 in. long, ij^ in. wide and 



^ in. thick 

 2 bottom end rails, 6 in. long, i in. wide and 



^ in. thick 

 2 back uprights, 10 in. long, iJ4 in. wide and 



^ in. thick 

 2 brackets, 6 in. long, 2 in. wide and j^ in. 



thick 



To start the work, begin with the base, 

 the plan of which is shown in Fig. 2. If 

 the material is purchased from a mill 

 the pieces can be ordered cut to dimensions, 

 planed and sanded, which will cover most 

 of the hard work. The outside corners of 

 the base are slightly rounded as shown. 

 The bracket pieces and the back uprights 

 are next in order of construction. The 

 lower ends of the uprights are cut pointed 

 and set in the back edge of the base as 

 shown in Fig. 3. The joints for the rails 

 are shown in Fig. 4. 



The facing pieces have an ornamental 



