J I ii I u 



FOR PRACTICAL 

 WORKERS 



Using a Piece of Wool to Detect 

 Dye in Jam 



SOME of the jam sold at the present 

 time is dyed to give it an attractive 

 color. Happily, it is easy to find out 

 whether or not the jam has been treated 



A bit of cotton dipped into dyed jam will 

 retain the color through many washings 



in this way. The first step is to mix a 

 little of the suspected article with some 

 -w'ater, then dip into it a piece of clean 

 cotton wool. If the jam has been arti- 

 ficially colored, the stain on the wool wdll 

 be very difficult to wash out. On the 

 other hand, when the jam is pure, the 

 stain can be rinsed away very easily. 



Rubber Roofing Used for Packing 

 in Steam Joints 



IN case of emergency — and in the 

 regular course of repairs for that 

 matter — ordinary rubber roofing makes 

 an excellent packing for steam joints. 

 As a gasket between flanges on a steam 

 line, for cylinder head, or for steam chest 

 work, it lasts just as well as regular 

 packing and shows no more of a ten- 

 dency to blow out. Moreover it is a 

 great deal cheaper. 



Deodorizing Naphthaline for 

 Medicinal Purposes 



NAPHTHALINE has such a dis- 

 agreeable odor that its use in medi- 

 cine and surgery is considerably retarded, 

 and it has been found out by experience 

 that the mixture of camphor and various 

 other deodorants with it produces only a 

 temporary benefit. Mixing the naphtha- 

 line with some benzoin and subliming the 

 mixture, frees the sublimate of naphtha- 

 line from the tarry smell. Moreover, the 

 naphthaline is given a pleasant odor. 

 This is not the case when it is simply mixed 

 with tincture of benzoin or benzoic acid. 



Trick of Brushing Ten -Cent Piece 

 from the Palm 



STRETCH out your hand and place a 

 dime in the center of your palm 

 Give your chum a whisk broom and ask 

 him to brush off 



the dime. He will 

 probably laugh 

 and ask "What's 

 the idea?" But 

 let him try it. He 

 can brush for half 

 an hour without 

 removing the coin. 

 A dime cannot be 

 brushed from the 

 center of the palm 

 with a whisk 

 broom unless it is 

 "dug out" with a corner, which would 

 not be fair play. Try it for your- 

 self first and see — then try it with your 

 friends. If anyone wishes to examine 

 the dime after the stunt, tell him that 

 even the dime says the joke is on him. 

 To prove this, turn the coin over to show 

 the printed words: ONE DIME. Cover 

 up the E and the Di. The remaining 

 letters spell "ON ME." 



The coin cannot 

 be swept out 



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