The gas that lights the streets is made from coal, and when the gas is taken from it what is left is called coke, which makes a very bright warm fire.
The teacher that properly enters into the spirit of these lessons, may find in the simplest objects, a never-ending source of pleasure and instruction for his infant pupils.

No person who is not qualified to give proper and really useful gallery lessons is by any means fit for a teacher of infants; to learn the mere routine of an infant school is not very difficult, but this will be of no avail if the teacher have not qualifications of a much higher order, which will enable him continually to pour instruction clothed in simple language, into the minds of his pupils; simplicity is the life and soul of gallery teaching; without this, the breath is wasted, and time is spent in vain.

To teach infants we must reduce our language to their tender capacities, and become, in idea and words, one of themselves.

Having given the children your information on a piece of coal, you now proceed to get it back, as follows Q.Little children, what have we been speaking about?
A.About coal.
Q.What colour is it?
A.Black.

Q.Is it anything besides?
A.Yes; shining.