16 With a mind upheld by these thoughts to cherish a joyful and firm hope, as a pledge of the favours of Heaven and of Our good-will, We most lovingly in the Lord grant to you, Venerable Brethren, and to the clergy and people of the whole Catholic world, the Apostolic blessing. Given at Rome at St. Peter's, on the birthday of Our Lord Jesus Christ; in the year 1888; the eleventh of Our Pontificate.
Source: Exeunte Iam Anno (Vatican.va)