Popular Science Monthly 



765 



used for dampening the fire, but does not 

 burn freely enough alone to give the 

 requisite heat. 



Under no circumstances use pine wood, 

 because the smoke gives a resinous flavor to 

 the fish and renders it most unpleasant to 

 the taste. A very small amount of pine 

 wood may be used with other woods if no 

 better fuel is available. 



The smoking process is very simple, but 

 it requires care and patience. Fish should 

 be smoked from 24 to 36 hours, depending 

 on their size. Some small fish need only 

 6 to 8 hours. Care should be taken not to 

 allow the lire to get too hot as too much 

 heat makes the product dry and unattrac- 

 tive. At first it is well to test the fish by- 

 tearing off small ' pieces while they are 

 smoking. 



When the fish are properly smoked they 

 should be left in the smokehouse until 

 cold. If they are taken out while hot they 

 are almost sure to sweat. This causes 

 molding. They should be kept in a cool, 

 dry place as an insurance against mold. 

 It is a good idea to dip them in melted 

 paraffin as a protective measure. They 

 should be handled very little after this. 



Simple Ejector for Removing Water 

 from an Ash Pit 



CONSIDERABLE trouble was experi- 

 enced in a boiler room with a leaky 

 valve, the location of which caused the 

 water to run in the ash pit. This had to be 

 bailed out, and the fireman 

 had all he could do, until 

 the repair was made, re- 

 moving the water with a 

 bucket. Being gifted with 

 some ingenuity he devised 

 the ejector shown in the il- 

 lustration. A piece of 2^- 

 in. pipe long enough to 

 reach out of the boiler 

 room was placed so that one 

 end entered the pit while the 

 other remained in the water. 



To out side of 

 boiler room 



2/2'P 



Automobile Footboard Used as 

 a Roller Board 



THE footboard of an automobile can be 

 readily made into a roller board con- 

 venient for making investigations under the 

 car whether in the garage or on a country 



-ROLLER UNDERSIDE OF FOOT BOARD 



The footboard with rollers attached makes a 

 good roller board for use under automobile 



road. It is only necessary to attach a ball- 

 bearing roller or caster on the underside 

 of the board at each corner where they will 

 not be likely to interfere with any part 

 of the motor. — Louis S. Niper. 



A length of ^-in. pipe 



was bent into a U-shape, 

 one end being introduced in 

 the large pipe in the water 

 and the other attached to 

 a steam line. With this 

 appliance which only re- 

 quired a few minutes to 

 make, and which cost practically nothing, the 

 water was soon removed. — Charles Loomis. 



This end to 

 extend to 

 bottom of 

 ash pit 



A simple and inexpensive ejector 

 made of pipe and fittings 



A New Way to Make an Hydraulic 

 Test for Steam Boilers 



SOME time ago, the writer desired to 

 test a small upright boiler that had 

 frozen up during a cold snap. Having no 

 force pump to give it the hydraulic test of 

 100 lb. pressure per square inch, he finally 

 hit upon the following method which 

 proved very effective: 



The boiler was filled completely with 

 water, leaving no air space whatever; then 

 a small fire was built so as 

 to heat the water gradually. 

 This caused the water to ex- 

 pand and register pressure 

 on the gage. When the 

 desired amount of 100 lb. 

 was reached, a try-cock was 

 opened and the water al- 

 lowed to reach the proper 

 working level. Everything 

 being found in good work- 

 ing order, the fire was in- 

 creased and the necessary 

 amount of steam was then 

 gotten up in the usual way. 

 It is best always to thaw a 

 frozen boiler out completely 

 before trying any tests of 

 this kind, making sure that 

 all of the pipes are free from 

 ice, and everything in good 

 condition ; otherwise serious accidents may 

 result. — W. S. Staudiford. 



