But let not the teacher suppose that these special facilities are essential to enable him to give instruction to his pupils in such a way.

I have known a much larger balloon than the one represented in the engraving to be constructed by the teacher and pupils of a common country school from directions in Rees's Cyclopedia, and sent up in the open air.

The aeronaut that accompanied it was a hen--poor thing!] The design of such lectures should be to extend the _general knowledge_ of the pupils in regard to those subjects on which they will need information in their progress through life.

In regard to each of these particulars I shall speak more particularly hereafter, in the chapters to which they respectively belong.

My only object here is to show, in the general arrangements of the school, how a place is to be found for them.