Necioss 4-2-37 ADVERTISEMENT. THE following translation of Arago's Memoir of Watt has been republished from the October Number of the Edinburgh New Philosophical Journal. The intrinsic interest of the subject, and the labour bestowed upon the translation, encourage the publishers to believe that the present Memoir will be an acceptable contribution to the scientific biography of this country. The Memoir on Machinery, by the same distinguished author, has been considered an appropriate addition to the Life of a man who has done so much to extend its power and usefulness. The eloquent panegyric by Lord Jeffrey, and the Account of the Discovery of the Composition of Water by Lord Brougham, it is hoped, will still further enhance the interest of the Work, and recommend it alike to the man of science and the general reader. EDINBURGH, 27 NORTH BRIDGE, 196110 CONTENTS. Childhood and youth of James Watt; his appointment as Instrument-maker to the University of Glasgow, Copying Press-Heating by Steam-The Composition of Water-Bleaching by means of Chlorine-Experi- ments upon the Physiological Effects resulting from the Respiration of various Gases, Watt in Retirement-Details respecting his Life and |