ALCOHOL FOR INDUSTRIAL PURPUOSES 



191 



and 



fer- 



Experiment 79. Making and Distilling Alcohol. 

 Apparatus: Burner, ring stand, wire gauze, flask, 

 tin grater, glass tube, test tube, glass. 



Materials: Molasses, potatoes, yeast. 



a. Experiment 62 may be repeated 

 mentation allowed to continue 



for three days. Then arrange 

 apparatus as shown in the il- 

 lustration and warm the mixture 

 very gently. Alcohol will pass 

 off just before the boiling tem- 

 perature of the water is reached 

 and will collect in the tube which 

 is placed in the cold water. The 

 alcohol should b ur n when 

 poured upon a plate and touched 

 with a match. 



b. Grate some raw potatoes, mix with water, and 

 add about one-tenth as much yeast as there is mash 

 Allow to ferment as in (a) above, and distil. 



80. The Pantagraph. 



The pantagraph, as shown in the illustration is a 



