No two are alike.

Sound and color are one and the same thing differently expressed, and the graduations of both are infinite." He caught the eye of one of the men.
"Calcutta!" he said, in a voice not exactly of command, yet certainly not of deference.
Without acknowledging the order in any other way, the man got on his knees and picked up an enormous tuning fork, whose prongs were about three feet long, and he made some adjustment in the fork of it that took about five minutes.

He might have been turning the screw of a micrometer; I could not see.

Then, raising the fork above his shoulder, he struck the floor with it, and a master-note as clear as the peal of a bell went ringing up into the dome.
The effect was almost ridiculous.

It made you want to laugh.