PLATES! PLATES !! PLATES !!! - To Daguerreotype Artists and Amateurs. - In consequence of repeated complaints from Artists of failures to obtain fine Portraits, from imperfections in the Plates, the subscriber begs leave to inform them that he is manufacturing Plates of a superior quality to any that have hitherto been used in this country. These Plates have been fairly tried, and tested by several of the most experienced and skilful operators in the United States, from whom he has received certificates that they are superior to any Plates they have ever used before.