Kilgariff responded enthusiastically to this appeal. He personally investigated the quinine-producing capacity of every tree and plant that grew at Wyanoke or in its neighbourhood.
“The dog fennel,” he said to Dorothy, “is most promising. It yields quinine in greater quantity, in proportion to the time and labour involved, than anything else we have. Of course, if ours were a commercial enterprise, it would not pay to attempt any of these manufactures. But our problem is simply to produce medicines for the army at whatever cost. So I have taken the liberty of ordering all your chaps”—the term “chaps” in Virginia meant juvenile negroes—“to gather all the dog fennel they can, and to dry it on fence-rail platforms. I am having the men put up some kettles in which to steep it. The rest we must do in the laboratory. Our great lack is that of kettles enough.”
“Must they be of iron?” asked Evelyn, with earnest interest. “Must they have fires under them?”
“N-no,” answered Kilgariff, hesitatingly. “I suppose washtubs or anything that will hold water will do. We must use hot water to steep the plants in, but we might pour hot water into vessels in which we couldn’t heat it. Yes, Evelyn, any sort of vessel that will hold water will answer our purpose.”
“Then I’ll provide all the tanks you need, if Dorothy will give me leave to command the servant-men. I do know how.”
The leave was promptly given, and Evelyn instructed the negroes how to make staves of large proportions, and how to put them together. Three days later, with an adequate supply of these, and with a quantity of binding hoops which she had herself fashioned out of hickory saplings to the utter astonishment of her comrades, the girl manufactured a number of wooden and water-tight tanks, each capable of holding many scores of gallons.
“Where did you learn to do that?” Kilgariff asked, when the first of the tanks was set up.
“Among the whale fishermen,” she answered. “But I mustn’t tell you about that, and you mustn’t ask. But my tanks will hold oil as well as water, and I am going to make a little one for castor oil. You know we have five acres in castor beans. I reckon you two do know how to make castor oil out of them.”
“Come here, Evelyn, and sit down,” said Dorothy. “Of course we know how to extract castor oil from the beans, but we don’t know where or how you got your peculiar English. Tell us about it.”