I am making a collection of stones, one from every State. I try to get them about the size of a hen's egg. If any other correspondent is making such a collection, I will be very glad to exchange a stone from Michigan for one from any other State.

Jessie I. Beal,
Agricultural College, Lansing, Michigan.


I would like to exchange pressed flowers for birds' eggs with any of the correspondents of Our Post-office Box.

Belle Ross,
Knoxville, Tennessee.


I would like to exchange postmarks of the United States or of foreign countries with any readers of Harper's Young People.

Fred L. B.,
337 Belleville Avenue, Newark, New Jersey.


I have a collection of postage stamps, and would gladly exchange with any readers of Young People. I was born in the West Indies, in the island of Curaçao, and I can get a great many stamps from there. Correspondents will please send me a list of what stamps they require, and what kinds they have to exchange.