text:  He relates in the following terms as one of many similar instances which had come under his observation:--"In the 14th year of the present century (the 18th ) in the opera they were performing at Ancona there was at the beginning of the 3d act a line of recitative unaccompanied by any instruments but the bass by which equally among the professors and the audience was raised such and so great a commotion of mind that all looked in one another's faces on account of the evident change of colour which took place in each