If the answers were feeble in the instance we are supposing, the teacher would perhaps say, "I only heard one or two answers; do not more of you know where the Rocky Mountains are?
Will you all think and answer together?
Which way are they from us ?" "West," answer a large number of boys.
"You do not answer fully enough yet; I do not think more than forty answered, and there are about sixty here.

I should like to have _every one in the room_ answer, and all precisely together." He then repeats the question, and obtains a full response.

A similar effort will always succeed.
"Now does the sun, in going round the earth, pass over the Rocky Mountains, or over us, first ?" To this question the teacher hears a confused answer.

Some do not reply; some say, "Over the Rocky Mountains;" others, "Over us;" and others still, "The sun does not move at all." "It is true that the sun, strictly speaking, does not move; the earth turns round, presenting the various countries in succession to the sun, but the effect is precisely the same as it would be if the sun moved, and, accordingly, I use that language.

Now how long does it take the sun to pass round the earth ?" "Twenty-four hours." "Does he go toward the west or toward the east from us ?" "Toward the west." But it is not necessary to give the replies; the questions alone will be sufficient.