Two or three days of the present week were a Pentecostal season to the Jewish residents of the city. Leading representatives of an association called the "Union of American Hebrew Congregations" have been in the city attending a convention of its members, which was held on the 9th, 10th, and 11th inst. A banquet at the Plankinton House, addresses, and business proceedings occupied the delegates, - all of which have been faithfully reported to The Tribune. It has been an interesting sight to see the two hundred ladies and gentlemen who composed this extraordinary delegation.