On this day (April 15) in the year 1847, the following notice appeared in the "Farmer and Mechanic." (New-York) Vol. 1, No. 16 (15 April 1847) pg. 181: - - - - - - - - Improvement in the Daguerreotype. We learn from the New Orleans Commercial Times that one of the most expert and successful Daguerreotypists in New Orleans, has made a remarkable discovery in the art, which enables him to obviate the great difficulty of executing portraits of children, who from their nature, from the activity of their nervous system, cannot remain in repose many consecutive seconds. In one second, he can take off a likeness with the same accuracy, as by the old method, which required a comparatively much longer time. He has made application for letters patent for this improvement. -------------------------------------------------------------- 04-15-98