Use "concenter" in a sentence

1. and handle those parts which attract and concenter the warmest force of

2. But when, by certain motions, certain unquietness of his hands, that wandered not without design, I found he languished for satisfying a curiosity, natural enough, to view and handle those parts which attract and concenter the warmest force of imagination, charmed, as I was, to have any occasion of obliging and humouring his young desires, I suffered him to proceed as he pleased, without check or control, to the satisfaction of them