APPARATUS LIST 



It is believed that the following list contains all the apparatus and supplies, excepting a few very common 

 materials, that are necessary for the laboratory work in general science. More elaborate apparatus could be speci- 

 fied in many cases, but it is believed that there is a positive educational gain in using simple apparatus. It will 

 be noted that in many cases it is possible to use familiar appliances from the household, farm, and shop, and these 

 should be used wherever practicable. It is taken for granted that the school possesses certain common equipment 

 such as hammer, saw, nails, tacks, pliers, cork and rubber stoppers, and glass and rubber tubing. 



The prices attached are approximate only and are based upon retail prices as found in retail stores and in dealers' 

 catalogues. Schools should be able to secure a discount of from 10 to 25 per cent from these prices. The elimination 

 of the most expensive pieces of apparatus will not require the omission of many exercises. 



GENERAL APPARATUS 



1 air pump (if the laboratory is supplied with run- 

 ning water, it will be cheaper and more conven- 

 ient to use a filter pump, price $1.75) . . . $4.00 



1 air-pump platform 5.50 



1 or more aquaria (battery jars may be used, $0.65 



each) ." 65 



1 balance (Harvard trip scale or other balance weigh- 

 ing to 0.1 gram) 8.00 



1 set balance weights (iron, 5 grams to 1000 grains) 1.60 



1 bicycle pump for inflating football '25 



1 bladder glass : 1.00 



1 barometer tube 33 



1 ball cord (linen) 20 



1 piece charcoal 



1 Ib. copper wire (No. 18) 15 



1 roll cotton (absorbent) 20 



1 clarnp (wire test-tube holder) 10 



3 (or more) dry cells (50 



Maps of ports or waterways of local importance. 



Price lists may be secured from the following : 



Coasts of United States : Coast and Geodetic 



Survey, Washington, D.C. 

 Great Lakes : United States Lake Survey Office, 



Detroit, Michigan. 

 Mississippi River : Mississippi River Commission, 



St. Louis, Missouri. 



1 electrolysis apparatus (substitute may be made 

 from bottle, stopper, and electric-light carbons 



as described in Exercises) 1.25 



1 football (borrow this from athletic department) 



1 funnel (glass, 8 inches in diameter) 30 



100 filter papers (circular, 13 inches in diameter) $0.70 

 1 globe, brass, air-weighing (glass flask may be sub- 

 stituted) 2.50 



1 roll labels (Dennison's perforated paper labels No. 



221) 45 



1 or more magnifiers ($0.50 each) 50 



1 Ib. marble chips 



1 meter stick or yardstick 25 



1 osmometer, Lyon's pattern, from Win. Gaertner 

 and Company, Chicago (glass thistle tube may 



be substituted) 50 



1 cake paraffin or sealing wax 05 



1 protractor (brass, 5-inch) 20 



1 pail (galvanized) 20 



1 glass pump model (may be constructed from lamp 

 chimney, cork stoppers, wire, leather, and tacks, 

 as described in Exercises) 1.65 



1 coil picture wire (small) 05 



2 pinchcocks (Mohr's medium-si/e) 20 



1 pinchcock, screw compressor 20 



^ Ib. parchment paper, medium weight 20 



Reports of local boards of health 



1 piece sheet rubber (dentists' rubber dam, 2x2 ft.) .25 



1 rubber rod or ruler 10 



1 package starch 10 



1 steam-engine model 2.25 



4 thistle tubes (15-inch stem) 48 



1 piece tubing (glass, ^-irich diameter, 5 foot long) . .40 



1 wiro basket for test tubes 40 



Total $35.26 



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