Fig. 61a. MAKING A REAL RUBY BY CHEMISTRY

Fig. 61b. RUBY BOULES AS THEY COME FROM THE FURNACE
Fig. 61c. SYNTHETIC RUBIES AFTER THEY ARE CUT

Your Chemical Equipment.—The chemical apparatus you will require depends entirely on the class of work you are doing but for all ordinary chemical experiments the following apparatus will be found useful: (1) a nest of beakers; (2) a jeweler’s blowpipe; (3) one-half dozen wide mouth flint bottles; (4) a Bunsen burner with regulator, that is if you have gas, or (5) an alcohol lamp; (6) a glass U tube; (7) a nest of Hessian crucibles; (8) a nest of porcelain crucibles; (9) an evaporating dish; (10) a lead dish; (11) a couple of glass funnels; (12) a glass bottle with a two hole stopper; (13) half a pound of glass tubing; (14) a porcelain mortar and pestle; (15) a plain glass retort; (16) a stoppered retort; (17) 3 or 4 feet of ¼ inch rubber tubing; (18) a sand bath; (19) a dozen test tubes; (20) a test-tube stand; (21) a test-tube clamp; (22) a test-tube brush; (23) an iron retort tripod; (24) one-half dozen watch glasses; (25) a water bath; (26) some wire clamp supports; (27) a couple of platinum plates; (28) an air bath; (29) a burette; (30) a pinch-cock, and (31) a brass scale with weights. See Fig. 62.

All of the above apparatus can be bought of any dealer in chemical or school apparatus for ten or twelve dollars. For advanced work you will need other apparatus but whatever your requirements may be you can either buy the apparatus ready made or have it made to order.

As to chemicals these will likewise depend on the nature of your experiments. Send to Eimer and Amend, 205 Third avenue, New York City, for a catalogue and price list of chemicals and chemical apparatus as they sell everything used by chemists and electrochemists.

Fig. 62. SOME USEFUL CHEMICAL APPARATUS

[Large illustration]