18 Biographical Memoir of the late Friedrich Hoffmann, 



geognostical relations of the district of Ibbenbiihren and Osnabriick ; Kart- 

 Sten's Archiv, vol. xii. p. 2G4, and vol. xiii. p. 3. 11. Researches regarding 

 the fussil plants of the coal-formation at Ibbenbiihren and at the Piesberg near 

 Osnabriick; Karsten, vol. xiii. p. 2GG. 12. On the copper-slate of the north- 

 western portion of the secondary formations of the north of Germany ; Leon- 

 hard's Zeitschrift, 1826, vol. i. p. 539 — 1827. 13. On the volcanos of the South 

 Sea Islands — being a preface to two memoirs by Ellis on the volcanic pheno- 

 mena ofOwaihi; PoggendorfF's Annalen, vol. ix. p. 141. — 1828. 14. On some 

 newly discovered geognostical phenomena of the Plain of North Germany ; 

 PoggendortT, vol. xii. p. 109. 15. On Volcanic uprisings in the Moluccas; Pog- 

 gendorffj vol. xii. p. 606. 16. Remarks on the volcanos of the island of Java ; 

 PoggendorfF, vol. xii. p. 605. 17. Remarks on the occurrence of platina in 

 the Ural; PoggendorfF, vol. xiii. p. 666. — 1829. 18. Remarks on the reci- 

 procal relations of the ancient floras of the earth, with more particular refer- 

 ence to the Prodrome of Ad. Brongniart; Poggendorff, vol. xv. p. 415. 19, 

 On the geognostical constitution of the territory of Rome, together with gene- 

 ral remarks on the geognostical character of Italy ; prepared by Hoffmann for 

 the great work on Rome by Plattner, Bunsen, Gerhard, and Rostell ; and also 

 published in PoggendorfF, vol. xvi. p. 1. Translated in Edinburgh New Philo- 

 sophical Journal, vol. viii. p. 76. 20. On the relations of the crystalline rocks 

 to the slates in the Hartz, and in the Erzgebirge and Fichtelgebirge ; Pog- 

 gendorfF, vol. xvi. p. 613. 21. On valleys of elevation, and their connection 

 with the origin of acidulous mineral springs; Poggendorff, vol. xvii. p. 151. 

 Translated in Edinburgh New Philosophical Journal, vol. ix. p. 349. 22. 

 Geognostical Map of North-Western Germany, in 24 sheets. 23. Remarks 

 on the vegetation and fauna of Heligoland ; published in the " Verhandlungen 



der Gesellschaft naturforschender Freunde zu Berlin," vol i. p. 228 1830. 



24. General View of Orographical and Geognostical Relations of North- 

 Western Germany, one vol. 8vo. 25. Series of Geognostical Plates of North- 

 Western Germany. 26. Barometrical measurements of a line from the Saale 

 near Halle, to the Weser near Iloxter; Berghaus's Annalen der Erdkunde, 

 vol. i. p. 48. — 1831. 27. On the mountains of Albano and on iEtna, (with a 

 view of the Val di Bove); Karsten's Archiv, new series, vol. iii. p. 361. 

 Translated in Edin. New Phil. Journ., vol- xii. p. 370. 28. On the Temple 

 of Serapis near Pozzuoli, (with a Plate) ; Karsten, vol. iii. p. 373. 29. On 

 the tertiary formations of the coast of Sicily, the relations of the basalt to the 

 west of Syracuse, and ossiferous breccias, (with Views) ; Karsten, vol. iii. 

 p. 383. 30. On Cape Passaro and the Val di Noto, (with a Map): Karsten, 

 vol. iii. p. 397. 31. Remarks on the New Volcano near the town of Sciacca, 

 in a letter to the Duke of Serradifalco. Palermo, (in Italian). 32. Letter to 

 Niccolo Cacciatore on the New Volcano, published in the Giornale di Scienze 



Lettere e Arti per la Sicilia, October 1831 1832. 33. On the Earthquakes 



observed during the last forty years at Palermo, with reference to their direc 

 tion, distribution according to the seasons of the year, and probable influence 

 on the barometer ; Poggendorff, vol. xxiv. p. 49. 34. A large portion of an 

 article on the new volcanic island in the Mediterranean, published in Pog- 

 gendorff, vol. xxiv. p. 65. 36. On the ossiferous grotto of Mardolce, near 

 Palermo ; Karsten, vol. iv. p. 253 (with a Plate). 36. On the geognostical 

 constitution of the Lipari Islands, (with four Plates,) published in Poggen- 

 dorff, vol. xxvi. p. 1, and also separately. — 1833. 37. On the geognosy of 



