"Then I'll teach you some day. There is sweet flag and poisonous flag, and all sorts of berries and things; and you'd better look out when you are in the woods, or you'll touch ivy and dogwood, and have a horrid time, if you don't know your botany."

"Thorny learned much of his by sad experience; and you will be wise to take his advice," said Miss Celia, recalling her brother's various mishaps before the new fancy came on.

"Didn't I have a time of it, though, when I had to go round for a week with plantain leaves and cream stuck all over my face! Just picked some pretty red dogwood, Ben; and then I was a regular guy, with a face like a lobster, and my eyes swelled out of sight. Come along, and learn right away, and never get into scrapes like most fellows."

Impressed by this warning, and attracted by Thorny's enthusiasm, Ben cast himself down upon the blanket, and for an hour the two heads bobbed to and fro, from microscope to book, the teacher airing his small knowledge, the pupil more and more interested in the new and curious things he saw or heard,—though it must be confessed that Ben infinitely preferred to watch ants and bugs, queer little worms and gauzy-winged flies, rather than "putter" over plants with long names. He did not dare to say so, however; but, when Thorny asked him if it wasn't capital fun, he dodged cleverly by proposing to hunt up the flowers for his master to study, offering to learn about the dangerous ones, but pleading want of time to investigate this pleasing science very deeply.

As Thorny had talked himself hoarse, he was very ready to dismiss his class of one to fish the milk-bottle out of the brook; and recess was prolonged till next day. But both boys found a new pleasure in the pretty pastime they made of it; for active Ben ranged the woods and fields with a tin box slung over his shoulder, and feeble Thorny had a little room fitted up for his own use, where he pressed flowers in newspaper books, dried herbs on the walls, had bottles and cups, pans and platters, for his treasures, and made as much litter as he liked.

Presently, Ben brought such lively accounts of the green nooks where jacks-in-the-pulpit preached their little sermons; brooks, beside which grew blue violets and lovely ferns; rocks, round which danced the columbines like rosy elves, or the trees where birds built, squirrels chattered, and woodchucks burrowed, that Thorny was seized with a desire to go and see these beauties for himself. So Jack was saddled, and went plodding, scrambling, and wandering into all manner of pleasant places, always bringing home a stronger, browner rider than he carried away.

This delighted Miss Celia; and she gladly saw them ramble off together, leaving her time to stitch happily at certain dainty bits of sewing, write voluminous letters, or dream over others quite as long, swinging in her hammock under the lilacs.

CHAPTER XIII

SOMEBODY RUNS AWAY