ORGANIC COMPOUNDS OF PLANTS 



211 



not heat- or muscle-forming nutrients, but simply food 

 adjuncts. Some of the essential oils have medicinal 

 properties, while others, as oil of bitter almonds, are 

 poisonous. 



Experiment 56. Essential oil from tea. Place 0.5 gram tea into 



Fig. 80. Preparation of essential oils. 



a small flask, and add 50 cc. water. Connect the flask with a 

 delivery tube, one end of which leads into a test-tube containing 



