"How does it kill people?" At her question Leam turned suddenly round on him, her eyes full of a strange light.
"Some poisons kill in one way and some in another," answered Alick.
Leam pondered for a few moments; then she asked, "How much poison is there in the world?"
"An immense deal," said Alick: "I cannot possibly tell you how much."
"And it all kills?"
"Yes, it all kills, else it is not poison."
"And every one?"
"Yes, every one if enough is taken."
"What is enough?" she asked, still so serious, so intent.
Alick laughed. "That depends on the material," he said. "One grain of some and twenty of others."