A formula for blessing air machines, approved by the Congregation of Rites, March 24, 1920, and inserted in the Roman Ritual, as follows:

"O God who hast ordained all things for Thine own, and devised all the elements of this world for the human race; bless, we beseech thee, this machine consigned to the air; that it may serve for the praise and glory of Thy Name and, free from all injury and danger, expedite human interests and foster heavenly aspirations in the minds of all who use it. Through Christ Our Lord, Amen."