Frank's decision was made at once. The life at the Grammar School was very jolly, with its cricket and football and the rowing matches on the river, but if this new arrangement were carried out there would be far better opportunities of building and sailing the projected yacht, and of sporting and naturalizing on the broads and rivers, so he at once answered—

"I shall be very willing to try it, sir; but Jimmy Brett must be included in the arrangement. I could not desert him, and he would be miserable without me at school. It would never do to separate us now, father."

"Well, but do you think his grandmother can afford it? It will be more expensive than being at the Grammar School."

"Then I tell you what, father and mother: the Rector must only charge Jimmy the same as the Grammar School, and you must make up the difference to him, and I will do with less pocket-money."

"You shall not make that sacrifice, darling," said Mrs. Merivale; "we will put that all right, and I will go and see Mrs. Brett in the morning."

And so the matter was finally arranged, and that the boys might become well acquainted with each other, Dick Carleton was invited to stay at Mr. Merivale's. But before he comes we will just go back a few hours and follow merry Mary Merivale, as her brother called her, and her younger sister Florrie, on their search for pupæ.



CHAPTER IV.

Digging for Pupæ.—Dick Carleton.—Metamorphoses of Butterfly.

About two miles further inland from Mr. Merivale's and in the midst of a fine and well-wooded country, was Sir Richard Carleton's house. Around it was a park with larger timber trees than were to be found in the rest of the countryside. Mary and Florence Merivale had fixed on this spot as the scene of their labours in the cause of science, as represented by the collections of their brother and Jimmy Brett. Leaving the path, they trespassed boldly in search of suitable trees for their purpose. Frank had told them that the vicinity of houses was the best, because moths, in all probability attracted by the lights, laid their eggs on trees and shrubs near houses. So the two girls went up as near the large house as they thought they might venture without being seen, and commenced their search.