I still remember one of my lessons from this teacher. After the students were all in the lab, the teacher brought out three bott[es. One was filled with petrol, one with castor oil and one with vinegar. "Now watch carefully," said the teacher. He then filled a cup with some of the petrol, some of the castor oil and some of the vinegar. As the students watched him quiet[y, he mixed the three together. After that, he held up one of his fingers and showed it to the class. He then dipped it into the cup. After a few seconds he took his finger out. "Now watch," he said. "Remember, you must do every thing as I do." He put a finger in his mouth, tasted it and smiled, looking rather pleased
