A voice from the gallery demanded an explanation, why he felt indignant at what had passed on the Saturday alluded to. Macklin affected to be at a loss what the gentleman meant: an altercation then ensued between Mr. Sparks, the person who spoke, and another, which ended _in a challenge_ to walk out, or to take the unknown's address. Quiet again took place. "These criticks or partisans, not satisfied with their newspaper attacks upon my powers as a man and an actor, assembled in the gallery last Saturday night; and in two or three parties dispersed about the gallery, did by groans, laughs, hissing, and loud invectives, attack me in a violent manner. These parties were headed by two gentlemen, whom for the sake of truth and justice, with your permission, I will name.--The one was Mr. Reddish, a player belonging to Drury-lane Theatre; the other, one Mr. Sparks, a son of the late Luke Sparks, of worthy memory, an actor belonging to Covent-garden Theatre. This charge, I own, is a heavy one against Mr. Reddish in particular; as he is himself an actor: it is likewise heavy on Mr. Sparks, who intends to be one. Mr. Garrick, in his own defence, I am told, enquired into this matter in a formal manner behind the scenes; and upon the evidence produced by Mr. Reddish and Mr. Sparks, I am informed that Mr. Garrick did acquit Mr. Reddish of the charge; but I here pledge myself to give a positive proof of the fact of Mr. Reddish's hissing, which shall be supported by all the circumstances of probability and truth. I am afraid I have taken up too much of your time; yet, with your permission, I have a few words more to offer on this disagreeable subject.