Page:Willich, A. F. M. - The Domestic Encyclopædia (Vol. 4, 1802).djvu/61

Rh which extends nearly one mile in length. It was commenced on a base of 32 feet, and carried up to the height of seven feet, for the more easy ascent and descent of the waves; a plane of five feet being left on the top, and the land-side of the embankment made as nearly perpendicular as the security of the base would permit. This land is divided into four extensive marshes, by means of twelve-feet ditches; and all superfluous moisture is removed by numerous small drains or rills, that are cut in different parts of the tract.—Consistently with our limits, we cannot descend to particulars on this interesting subject; but, as numerous practical hints may be derived from the account of the different expedients ingeniously adopted, the inquisitive reader will consult the 4th, 6th, 14th, and 18th vols. of the Transactions of the Society before mentioned; where he will meet with a clear and explicit narrative.  SEA-AIR, denotes that part of the atmosphere, which is incumbent on the sea.

Experience evinces, that this air is salubrious, and singularly beneficial in the cure of particular diseases; on account of its being impregnated with a larger proportion of oxygen-gas, and containing less noxious vapours than that on land. Hence, a short voyage has often been snccessfully undertaken by consumptive patients, and such as were afflicted with asthmas, spitting of blood, and dropsies; especially if directed to a warmer country. These excursions have, likewise, been found very serviceable during the sickly season that annually prevails in the West Indies, and other hot climates. Dr. (Essay on the Diseases incident to Europeans in Hot Climates, 8vo. 1768) has therefore judiciously proposed a "floating factory," or infirmary-ship, to be stationed at a small distance from the shore, as being an effectual mean of preserving numerous lives. He observes, that there are certain fevers, which require an immediate change of air; as, otherwise, the most powerful and appropriate medicines will prove ineffectual; and, if a patient were removed to such vessel, as soon as the symptoms of the disease appear, he is of opinion, that the latter will not only be milder, but the cure will be facilitated; and the recovery of the patient more completely ensured. In consequence of this preservative measure, the constitution will be gradually inured to the climate; and thus be rendered less susceptible of injurious impressions, either from the atmosphere, or the exhalations of the soil.  . See.  . See.  . See.  ; or Sea-Colewort. See.  ; or Sea Gilliflower. See.  . See. <section end="Sea-grass" /> <section begin="Sea-holly" />. See. <section end="Sea-holly" /> <section begin="Sea-Lavender" />. See. <section end="Sea-Lavender" /> <section begin="Sea-Parsley" />. See Scottish. <section end="Sea-Parsley" /> <section begin="Sea-Parsnip" />. See, the Prickly. <section end="Sea-Parsnip" /> <section begin="Sea-sickness" />SEA-SICKNESS, a convulsive affection of the stomach, attended with great nausea and vomiting: it is occasioned by the irregular motion of the vessel.

The sea-sickness, generally <section end="Sea-sickness" /> tacks