, PUBLIC PROFESSOR OF ECONOMY IN THE UNIVERSITY OF GOTTINGEN, TRANSLATED FROM THE GERMAN, BY WILLIAM JOHNSTON. THIRD EDITION, CAREFULLY CORRECTED, AND ENLARGED BY THE ADDITION OF SEVERAL NEW ARTICLES. IN FOUR VOLUMES. VOL. IV. LONDON: BALDWIN, CRADOCK, AND JOY; R. PRIESTLEY; R. SCHOLEY; 1817. CONTENTS Prince Rupert's drops. Lacrymæ vitrece ... 68 Fire-engines .............. 75 Indigo . . . . . . . . . . . . . . . 101 Venes. Weathercocks . . . . . . . . . 145 Kitchen Vegetables · · · · · · ·... Knitting nets and stockings. Stocking-loom . . 286 Black lead . . . . . . . . . . . . . 345 Forks . . . . . . . . . . . . . . . 384 Orphan houses . . . . . . . . . . . . 458 Infirmaries. Hospitals for Invalids. Field-laza- rettoes . . . . . . . . . . . . ... 467 Addenda to the article on Turf .....498 - to the article on Cork ....... 504 ---- to the article on Quarantine ..... 507 Index to the authors and books quoted in the Fourth Volume . . . . . . . . . . . . . . 513 HISTORY OS INVENTIONS. TIN. TİNNING: It is generally believed that the metal called at present tin was known and employed in the arts, not only in the time of Pliny, but so early as that of Herodotus, Homer, and Moses. This I will not venture to deny; but I can only admit that it is probable, or that the great antiquity of this metal cannot be so fully proved as that of gold, silver, copper, iron, lead, and quicksilver. T'in is one of those minerals which hitherto have been found only in a few countries, none of which ever belonged to the Greeks or the Romans, or were visited, at an early period, by their merchants. As it never occurs in a native state,* the * Native tin never, or, at any rate, very rarely occurs. In the year 1765 a piece was supposed to be found, of which an account may be VOL. IV. |