Chap. I. Of Veins in General. § i. Preliminary observations § 2. Definition of veins - - - § 3. Difference between veins and other mineral re positories - § 4. Stockwerkes - § 5. New terms - - Chap. II. Short Account of the different Theories on the Formation of Veins. § 6. Ideas of Diodorus Siculus and Pliny § 7. of Agricola ... § 8. of Utman, Elterlein, Meier, Loehneis, &c. - - - 15 § 9. Opinion of Rosier - 16 § 10. ofBecher - 18 §ii. of Stahl - - ibid. § 12. of Henkel - 20 §13. —— of Hoffman - 22 § 14. - of Zimmerman - 23 e § if-