630 



close the valve automatically. Close the 

 gas-cock, make the proper connections, 

 and the apparatus is ready to use. As 

 gas is consumed, the gasometer descends 

 until it opens the valve. More carbide 

 falls into the receptacle to generate fresh 

 gas, thus raising the gasometer and clos- 

 ing the valve again. When through with 

 the light, turn off the gas-cock. This 

 stops the generator. As the gas cannot 

 escape, it remains in the same position 

 until used again. 



The gas is generated in the larger 

 tank, rises to the smaller tank and lifts 

 it. The weight of the gasometer pre- 

 vents it from going too high and also 

 gives the pressure to the gas. The gas 

 cannot flow down and around and out 

 through the spaces between tanks, since 

 the quantity of water forms a perfect 

 seal. — T. F. Buscii. 



A Novel Window-Shelf 



PROCURE from a blacksmith two 

 %" iron rods about 16'' in length. 

 Bend these in the center at a right angle. 

 Then put eight ordinary screw-eyes — 

 the eyes must be large enough to permit 

 the rod to pass through — into the wall 

 and into the under-side of the shelf- 

 board as the illustration shows. With 

 a pair of pliers open up the eyes of those 

 in the wall, which is an easy matter. 

 Now insert the rods and bend the eyes 

 back over them. The shelf-board can now 

 be slipped on the projecting ends of the 

 rods, care being taken that they go 

 through both 'the front and rear screw- 

 eyes. Unless the screw-eyes are long 

 enough to be driven into the scantling, 



Popular Science Morithly 



supporting upright strips for these will 

 be necessary. 



When it is desired to remove the 

 shelf-board to facilitate sweeping, for 

 instance, just pull it out and swing the 

 ends of the rods back against the wall as 

 if they were on hinges. They may even 

 be removed if desired. 



The cream may be taken off the top of a 



milk bottle with a syphon more rapidly 



and effectively than with a spoon 



A Siphon to Remove Cream 

 from Bottles 



AN easy and effective means of re- 

 moving the cream from bottles of 

 milk is shown in the illustration. The 

 siphon is filled by inverting the short 

 end in the neck of the bottle until the 

 cream runs in ; the thumb is then held 

 over the long end and the siphon placed 

 in position. By adjusting the depth to 

 which the short end reaches in the bot- 

 tle, the entire amount of cream can be 

 removed without withdrawing any milk. 

 The siphon is easily cleaned by running 

 hot water through it. An ordinary rub- 

 ber tube will do. 



T 



A Wash-Wringer Attachment 



O facilitate the 



Two views of a simple window-shelf which 

 can be easily removed 



moving of the 

 wringer to and 

 from the w a s h - 

 room, saw off one 

 end of the bottom at right angles, drill 

 a hole in it, and fasten on a caster. The 

 caster should be one of the type which 

 does not pivot about and should be so 

 placed that it barely touches the floor 

 when the wringer is upright. When it is 

 desired to move the wringer, pull it back 

 on the caster and push it ahead. 



