“The excellent man could not find a welcome for a single basket of potatoes. In the country they laughed maliciously at his obstinacy in cultivating a vile root that no peasant would even feed to his pigs. But Parmentier did not despair. A singular idea came to him: to see whether the charm of forbidden fruit would not accomplish what he had failed to effect by his writings, his advice, his personal example, and his generous offers. “A large field was planted with potatoes, and when the crop was ripe a fence was built about the field as if to protect a most valuable harvest. And more than this, Parmentier caused it to be trumpeted abroad throughout the neighboring villages that it was expressly forbidden to touch the potatoes under penalty of all the rigors of the law against marauders. During the day the guards kept strict watch over the field, and woe betide whoever should try to climb over the fence!” “It seems to me,” said Emile, “that with all those prohibitions and guards and fences Parmentier was more likely than ever to have all his potatoes to himself.” “Such was not his purpose; far from it. The guards kept good watch during the day, but they had orders to stay at home at night and leave unmolested any who might attempt to get into the field. ‘What, then, is this plant that is guarded with such jealous care?’ the peasants asked one another, attracted by the strictness of the prohibitory measures. ‘It must be very precious. Let us try to get some when the night is dark.’ “Some bold marauders climbed the fence, hastily pulled up a dozen tubers, and scampered off again, looking back to make sure they were not pursued. Not a guard was to be seen. Word soon spread that the field was not guarded at night. Then the pillage began in earnest: the tubers hitherto so despised were carried off by sackfuls. In a few days there was not a potato left in the ground. “People came and told Parmentier of the devastation of his field. The worthy man wept for joy; the one robbed blessed his robbers. By his ruse he had endowed his country with an inestimable food-supply; for, once placed in the hands of those who would consent to cultivate it, the potato was valued at its true worth and spread rapidly.” “Oh, what a curious story!” cried Louis, when Uncle Paul had finished; “what a curious story! Who would have thought it took all that trouble to make people accept a food that to-day is of such value to us? Is it, then, so very hard to spread a good idea when it is new?” “Very hard indeed,” replied Uncle Paul, “as those well know who make it their mission to fight against prejudice and ignorance.” CHAPTER XXII ASCENDING SAP