COMMUNICATION.Those who attended Mr. Potter'** exhibition on Monday evening, will, to. night, hive another opportunity or gia-tifying thir cniosiiy. To those who did no* attend, it is only necessary to say that the entertainment was a l that the bill of Isre promised ; that the novelties were surpiisiug, and excited the wonder and delight of the beheld-ers. The astonishing powers r.l ventriloquism vcre ad t irab!y display'd, and were only excelled i*y some pm,-cular deceptions, never before attempted in tins town. I understand it i* Mr. Pot*ci’s intention to introduce many new and singular operations vhich were not included in the last performance ; and should sufficient encouragement offer, ho wiP, I am told, on a future evening) display the extraordinary feat of the Arati Safamand' r% i:i which he in saiu to excel “ MaudeI the Great,'* and will,prove himself the crn peror of all conjurors I \AX OBSERVER.