INDIVIDUAL APPARATUS 



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One or more sets of the following apparatus will be needed. Performance of experiments by individual pupils 

 when practicable will require that the apparatus be duplicated. The number of duplicate pieces needed will depend 

 upon the number of pupils in the classes and upon whether the experiments are to be performed by each pupil working 

 alone or by groups of pupils. 



1 Bunsen burner (alcohol lamps may be used if the 



laboratory is not supplied with gas) . . . $0.30 



2 bottles (wide-mouthed, 6- or 8-ounce) 10 



1 candle 05 



1 cup (aluminum drinking cup, polished surface) . .10 

 1 cylinder (graduated, 100 cc., for measuring liquids) .70 

 1 flask (glass, 6-ounce), with 2-holed rubber stopper 



to fit 25 



1 dish (glass or earthenware, 3 or 4 inches in diam- 

 eter, shallow form such as low jelly glasses) . .02 



1 drinking glass 03 



1 pulley (double) 45 



1 pulley (single) 26 



1 pan (granite ware, 6 to 8 inches in diameter) . . .10 



1 pan (sheet-iron, such as a 6-inch frying pan) . : 

 ^ doz. plant pots, paraffined paper 3 inches high, 

 ^ cent each. (Earthenware pots may be used, 

 but must be sterilized before using a second 

 time. Paper pots are thrown away after using.) 

 1 ring stand and clamp for supporting apparatus 

 1 spring balance, reading to 8 ounces and 250 grams 

 1 piece tubing (glass, ^-inch diameter, 18 inches long) 

 1 thermometer (chemical) reading to 110 C. and 



220 F 1.25 



1 vial (shell vial) 02 



Weather maps (free) from nearest Weather Bureau 

 Station 



Total (one set) $5.90 



.03 

 .90 

 .80 

 .10 



CHEMICALS 



1 bottle ammonia water (household ammonia) . $0.10 



1 Ib. acid, hydrochloric, commercial 35 



1 Ib. acid, nitric, commercial 35 



1 Ib. acid, sulphuric, commercial 30 



1 qt. alcohol, grain, 95 per cent 75 



1 oz. eosin, water soluble (red ink may be substituted) .20 



Ib. formaldehyde (40 per cent solution) 20 



4 oz. ether (or chloroform) 35 



4 oz. Fehling's solution No. 1 

 4 oz. Fehling's solution No. 2 



(Mix No. 1 and No. 2 in equal parts for use.) 

 4 oz. iodine solution (tincture of iodine) 30 



Lime water. (Make when needed by slacking lime 

 in water and filtering off the water. More water 

 may be added to the residue in the bottle and fil- 

 tered off later. Keep bottle tightly stoppered.) 



4 oz. litmus solution . . . - 



2 Ib. mercury 2.00 



4 oz. potassium chlorate 10 



4 oz. sulphur (flowers) 05 



1 bag salt (coarse) 10 



4 oz. vaseline 10 



1 Ib. zinc (granulated, mossy, or scrap) 20 



Total $6.30 



SPECIAL APPARATUS 



The following pieces of apparatus can be secured from the other laboratories of the school if these are fully 

 equipped, or in some cases they may be borrowed from citizens (these pieces are not used with sufficient frequency 

 to justify purchasing for the general-science courses only) : 



Compound microscopes or micro-projection apparatus, slides, cover glasses. 



Steam sterilizer. (The household type may be borrowed and is as satisfactory as the laboratory type. A sterilizer 

 may be improvised by placing the object to be sterilized in a bucket of boiling water.) 



A slated globe. (May be secured from the mathematics department or geography department.) 



The expense of equipping a laboratory for general-science classes will vary according to the amount of dependence 

 placed upon the laboratories already existing in the building. If these are well equipped and so located that their 

 facilities can be used to the fullest extent, very little new apparatus need be secured, and the expense will be nominal. 



If it is desired to equip the general-science laboratory quite completely and independently of other departments, 

 the cost is essentially as follows, assuming that the school has secured the usual discounts : 



1 complete set as above (not providing for individual laboratory work by the pupils) $40.00 



1 complete set and 19 duplicates of the individual set 130.00 



1 complete set and duplicates to provide for ten pupils or groups of pupils working simultaneously on many 



experiments 80.00 



By borrowing the most expensive apparatus and pieces used only once or twice during the year from other labora- 

 tories and by improvising some pieces as suggested, the cost of equipment for a very satisfactory course with a large 

 amount of individual experimentation may be reduced to $30.00 or less. 



