younger then, and among the blessings that are not denied to youth is ignorance. Incited by that great stimulant to controversy, I said:
"And what, pray, does it think with—in the absence of a brain?"
The reply, coming with less than his customary delay, took his favorite form of counter-interrogation:
"With what does a plant think—in the absence of a brain?"
"Ah, plants also belong to the philosopher class! I should be pleased to know some of their conclusions; you may omit the premises."
"Perhaps," he replied, apparently unaffected by my foolish irony, "you may be able to infer their convictions from their acts. I will spare you the familiar examples of the sensitive mimosa, the several insectivorous flowers and those whose stamens bend down and shake their pollen upon the entering bee in order that he may fertilize their distant mates. But observe this. In an open spot in my garden I planted a climbing vine. When it was barely above the surface I set a stake into the soil a yard away. The vine at once made for it, but as it was about to reach it after several days I removed it a few feet.
