experimenting

I have been experimenting with that type-writer, Mr. Roberts, all the week.

You know how keen my father is about experimenting with the land?

It is man who constitutes the changing, the experimenting, sex.

He has been experimenting in mathematical physics, and I have been assisting him.

It was not necessary that he should see my face in order to know with whom he was experimenting.

To tell the truth, I doubt if the man has a chance to do all of this experimenting.

In the yard beyond the hangman was experimenting with the trap.

One thing is certain, I'm not going on experimenting any longer.

Pleasure of experimenting, and exercising intellectual and moral power.

And they followed that by experimenting with the heavy furniture.