We are pained to learn the death of our able and faithful Paris correspondent anu agent, M. Gardissal. Throsgh this event the business heretofore so ably conducted by the deceased will be carried on by his equally able sons, C. Desnos and F. Gardissal, who have for many years past acted as assistants to their father, and who will continue to act as our attorneys and agents at Paris. M. Gardissal, during a long and active life, contributed much to the advancement of science and the mechanic arts by his numerous writings on industrial education, legislation, and development. After a vigorous application in early youth to fit himself for the profession of a mechanician and civil engineer, and acting as Professor in the University, he devoted his life to the zealous discharge of his duties with a warm attachment to the cause in which he had embarked. In 1854, M. Gardissal pnblished a dictionary of "technical terms in French and English, and for some years past published a monthly periodical (L'Invention), to which and other works he contributed much. valuable matter, in which was displayed great spirit of research, indefatigable industry, and liberal and manly sentiments. M. Gardissal was endeared to many of our clients and other Americans, who received, upon their visits to Paris, the most marked evidences of his attention and kind disposition, and who will learn the announcement of his death, as we have, with the most profound sorrow.