DEMONSTRATING PERFUMES CARLLEVEROCK Richmond Hill High School, Richmond Hill, New York
WHEN producing simple perfumes in a laboratory demonstration, the instructor is faced with the difficulty of having each student get a whiff of the characteristic odor. Passage of a test-tube about a large class consumes much time. For this reason a chemistry instructor in the Rich-
mond Hill High School has employed a simpler and more effective method. Connecting a length of rubber tubing to the compressed air cock, he directs the flow of air across the mouth of the test-tube toward the class. By this method all the students can simultaneously smell the odor of the perfume.
