[1] Hinc tibi, quae semper vicino ab limine sepes Hyblaeis apibus florem depasta salicti, Saepe levi _somnum_ suadebit inire susurro. VIRG. [2] May not the heat, and want of perspiration, depend on an exhausted irritability of the subcutaneous vessels, which will be accumulated by the method here recommended? [3] Oxygen gas, according to the new Nomenclature. [4] The fixed air, or carbonic acid gas, formed during the combustion, having been separated by agitation in contact with lime water. [5] Strictly speaking, water is composed of the bases of these airs, the greatest part of the caloric being given out on their union. [6] Where manufactures are carried on to a great extent, the air is rendered still worse, and every precaution ought to be used to preserve the health of the inhabitants. Places where manufactures are carried on, ought, therefore, to be constructed in such a manner as to be very lofty, and capable of being easily ventilated. Night-working is undoubtedly a perversion of the laws of nature, renders the constitution feeble, and lays a foundation for bad health and disease: for it not only gives no time for ventilation, and in consequence the quantity of oxygen becomes more and more exhausted; but the number of candles used, contributes very much to contaminate the air. It has been found by experiment that a candle contaminates more air than a man. By persons who are interested in the welfare of the succeeding generations, night-work will never be urged, and it will be right to ventilate the manufactories every night, as well as during breakfast and dinner. * * * * * _Lately published,_ Elegantly printed in Two Volumes Quarto, and illustrated by a Map and Fifty-two Plates, from Drawings taken on the Spot by W. H. Watts, who accompanied the Author in the Tour, Price 2l. 12s. 6d. in Boards, OBSERVATIONS on a TOUR through the HIGHLANDS and Part of the WESTERN ISLES of SCOTLAND, particularly STAFFA and ICOLMKILL: To which are added, a Description of the Falls of the Clyde, of the Country round Moffat, and an Analysis of its Mineral Waters. By T. GARNETT, M.D. Member of the Royal Medical, Physical, and Natural History Societies of Edinburgh; the Literary and Philosophical Society of Manchester; the Medical Society of London; the Royal Irish Academy; and Professor of Natural Philosophy and Chemistry in the Royal Institution of Great Britain. Printed for T. Cadell, jun. and W. Davies, Strand. * * * * Transcriber's Notes. The frontispiece contains the following text, and a portrait of the author: Engraved by J. Hopwood, from a picture by J. R. Smith. THOMAS GARNETT, M.D. Published March 25th 1800, by Cadell & Davies, Strand.