448 



Popular Science Monthly 



The flexible character of the key-bars 

 permits the operator to exert a greater or 

 less pressure without materially affecting 

 the movement of the rotating disks, and 

 thereby enables him to accent the musical 

 strains. The water used should be well 



The revolving rubber disks may be turned by a motor 

 or by an asastant to the person operating the keys 



acidulated and a quantity placed in the 

 cup-shaped retainers on the upper sides of 

 the disks. More or less of this water will 

 flow over the rubber bands during their 

 turning movement and thus constantly 

 provide sufficient moisture to produce the 

 best results. 



Electricity Used to Start a 

 Balky Horse 



A PENNSYLVANIA farmer who owns a 

 valuable horse, cured it of the habit 

 of balking by using electricity. He pur- 

 chased a small storage battery, connected 

 it with wires to the bit and crupper and 

 placed the battery in the cart to which the 

 horse was attached. When the horse re- 

 fused to move and stood with all four 

 feet braced, the owner touched the button 

 connecting the lines with the battery. The 

 horse received a slight shock and he snorted 

 and jumped and began to move off at a 

 lively pace. Every day for a week he was 

 given the same treatment. As a result the 

 balking habit was completely broken up. 

 Upon investigation the local Humane Soci- 

 ety decided that a little electricity is better 

 than a whip. — Mrs. C. A. Wolfe. 



Handily Arranged Case for Holding 

 Drawing Materials 



THE drawing shows the construction of 

 a convenient case to hold drawing 

 materials used by the draughtsman, pen 

 and ink artist or student. The outside di- 

 mensions are 5 in. high by 6}/^ in. 

 wide by 11^ in. long. A hinged 

 cover 3^ in. thick, fastening with 

 a hook or lock is provided. One end 

 is partitioned off to hold ink 

 bottles. The partition near the 

 front has a raised bottom so that 

 the ink bottle in use will rest with 

 its top almost flush with the top of 

 case. This bottle should be wedged 

 in. Instead of using the regular 

 filler-cap to close the bottle when 

 not in use, the bottle is stoppered 

 by means of a cork screwed to the 

 hinged top of the case, as shown. 



The cap is kept in the back 



partition, a block with a hole in its 



center being provided to hold the 



point of the quill from the bottom 



of the case. Thus as soon as the 



lid is raised the ink is ready for use. 



While being used the filler cap may 



be kept in the bottle. Space is left 



in the middle partition for a spare 



bottle of ink with its cap. These 



bottles should rest on pieces of blotting 



paper to absorb any ink which may be 



spilled. Blotting paper is also placed in 



the bottom of the partition where the filler 



cap is kept. 



A shallow wooden tray is set into the 

 upper portion of the main part of the case. 



SECTIONAL ElEVAnON 



A case with convenient compartments for 

 all tools used in ordinary drawing work 



and is divided into four parts. Two are full 

 length, to hold penholders and drawing 

 pencils, while the remaining one is divided 

 in two, one part holding erasers and the 



