104 TEACHING SCIENCE IN SECONDARY SCHOOLS


Bottles of all kinds


Secure Locally
 Cork stoppers


 Purchase from Supply House
 Glass tubing, 3/16 inch outside Glass tubing, '4-inch outside
 diameter, 5 lb. diameter, 3 lb.
 Graduates, 100 ml. (cc.) '*Hydrometer, heavy liquids
'Hydrometer, light liquids Hydrometer tubes, for shot
Mercury, 1 lb. Rubber tubing, 3/16-inch bore,
Rubber tubing, %-inch bore 12 ft.
 6 ft.
 Add, as Soon as Practicable


'*Barometer, aneroid
*Boyle's law apparatus


 I
*"Upward-pressure" apparatus
 Sec
"Air gun
 Purchase f
*Bell jar, open top
*Vacuum plate
"'Stop clocks
 Add, as S
*Air pump and accessories
*'Foot blower
*"Seven-in-one" apparatus


Air thermometer
''Compound bar
'"Convection apparatus
"Fireless cooker
Specific heat apparatus
"Ventilation apparatus

',Electric heating appliances
Lead shot
:"Toy steam engine
 Purchas
 Alcohol lamps or burners
 Thermometers, centigrade


 '"Barometer, mercury type
 "Pumps, glass models
Pneumatics


improvisee
 *Vacuum gauge of glass
ure Locally
 "Bicycle pump
Yrom Supply House
 *Vacuum and pressure
 bicycle pump style

oon as Practicable
 *Coin and feather tube
 ':Oil vacuum pump
 *'Water hammer


pump,


 Heat
 Improvise
 Calorimeters
 *Conductimeter
 Dew point apparatus
 Linear expansion apparatus
 Steam boilers
 Wet and dry bulb thermometers
Secure Locally


e from S


 Glass beads
 "Thermos bottle

supply House
 Balls or shot of aluminum, cop-
 per, iron, lead