"Well," said the young gentleman, after an awkward silence, "it takes lots of it to kindle fires."

"I do not think that Kitty ever uses it in the kitchen," said Miss Harson, "for she is supplied with kindling-wood for that purpose. You will have to think of something else."

But Malcolm could not think, and his governess finally told him that a great deal of charcoal is used for making gun-powder, and still more for fuel in France and the South of Europe, where a brass vessel supplies the place of a grate or stove. Quantities of it are consumed in steel-and iron-works, in preserving meat and other food, and in many similar ways. The children listened with great interest, and Malcolm felt sure that the next time he was asked about charcoal he would have a sensible answer.

"Our insect friends the aphides, or plant-lice, are very fond of the willow," continued Miss Harson, "and in hot, dry weather great masses of them gather on the leaves and drop a sugary juice, which the country-people call 'honey-dew,' and in some remote places, where knowledge is limited, it has been thought to come from the clouds. But we, who have learned something about these aphides[1], know that it comes from their little green bodies, and that the ants often carry the insects off to their nests, where they feed and 'tend them for the sake of this very juice. The aphis that infests the willow is the largest of the tribe, and the branches and stems of the tree are often blackened by the honey-dew that falls upon them."

[1] See Flyers and Crawlers, by the author. Presbyterian Board of Publication.

"Do willow trees grow everywhere?" asked Clara.

"They are certainly found in a great many different places," was the reply, "and even in the warmest countries. In one of the missionary settlements in Africa there is a solitary willow that has a story attached to it. It was the only tree in the settlement--think what a place that must have been!--except those the missionary had planted in his own garden, and it would never have existed but for the laziness of its owner. Nothing would have induced any of the natives to take the trouble to plant a tree, and therefore the willow had not been planted. But it happened, a long-time ago, that a native had fetched a log of wood from a distance, to make into a bowl when he should feel in the humor to do so. He threw the log into a pool of water, and soon forgot all about it. Weeks and months passed, and he never felt in the humor to work. But the log of wood set to work of its own accord. It had been cut from a willow, and it took root at the bottom of the pool and began to grow. In the end it became a handsome and flourishing tree."

This story was approved by the young audience, except that it was too short; but their governess laughingly said that, as there was nothing more to tell, it could not very well be any longer.

"The weeping willow," continued Miss Harson, "was first planted in England in not so lazy a way, but almost as accidentally. Many years ago a basket of figs was sent from Turkey to the poet Pope, and the basket was made of willow. Willows and their cousins the poplars are natives of the East; you remember that the one hundred and thirty-seventh psalm says of the captive Jews, 'By the rivers of Babylon, there we sat down, yea, we wept, when we remembered Zion. We hanged our harps upon the willows in the midst thereof.' 'The poet valued highly the small slender twigs, as associated with so much that was interesting, and he untwisted the basket and planted one of the branches in the ground. It had some tiny buds upon it, and he hoped he might be able to rear it, as none of this species of willow was known in England. Happily, the willow is very quick to take root and grow. The little branch soon became a tree, and drooped gracefully over the river in the same manner that its race had done over the waters of Babylon. From that one branch all the weeping willows in England are descended.'"