BIBLIOGRAPHY. 
The following list does not aim at completeness, but simply presents the books 
and papers, especially those of more modern dates, which have been found most 
useful in the present study. It includes chiefly those in which the several districts 
and their igneous rocks have been described petrographically, but only very few 
which deal chiefly or solely with the structural and stratigraphical geology. The 
districts vary widely from a bibliographical point of view. In some cases, notably 
the Campanian and Latian Districts, the literature is extensive and covers several 
centuries, while for others the literature is scanty and the number of titles few. 
1. ABICH, H. GeologischeBeobachtungen iiber die vulkanischen Erscheinungen und Bildungen 
in Unter- und Mittel-Italien. Braunschweig, 1841, I, Lief, i, pp. 1-134. 
2. BRANCO, W. "Die Vulkane des Herniker-Landes bei Frosinone in Mittel-Italien." Neu. 
Jahrb., 1877, pp. 561-589. (Map.) 
3. BRANCO, W. "I Vulcani degli Ernici nella Valle del Sacco." Atti Ace. Line. (3), I, 1877, 
pp. 801-817. 
4. BUCCA, L. " Contribuzione allo studio petrografico dell' Agro Sabatino e Cerite." Boll. 
Com. Geol. Ital., 1886, pp. 211-223. 
5. BUCCA, L. "II Monte di Roccamonfma. " Boll. Com. Geol. Ital., 1886, pp. 245-265. 
6. BUCCA, L. "Contribuzione allo studio petrografico dei Vulcani Viterbesi." Boll. Com. 
Geol. Ital., 1888, pp. 57-63. 
7. BUCCA, L. "Studio petrografico sulle trachite leucitiche del Lago di Bolsena. " Riv. Min. 
Crist., XII, 1893, pp. 18-30. 
8. DEECKE, W. "Fossa Lupara, ein Krater in den phlegraischen Feldern bei Neapel. " Zeits. 
d. deutsch. geol. Ges., XL, 1888, pp. 166-181. 
9. DEECKE, W. "Bemerkungen zur Entstehungsgeschichte und Gesteinskunde der Monti 
Cimini." Neu. Jahrb., B. B. VI, 1889, pp. 205-240. 
10. DEECKE, W. Geologischer Fiihrer durch Campanien. Berlin, 1901, pp. 235. 
11. DELL' ERBA, L. " Considerazioni sulla genesi del Piperno." Giorn. Min. Pet., Ill, 1892, 
pp. 23-53. 
12. DE LORENZO and RIVA. "II cratere del Vivara nelle Isole Flegree. " Mem. Ace. Napoli, 
X, 1900, No. 8, pp. 1-60. 
13. DE LORENZO and RIVA. "II cratere di Astroni nei Campi Flegrei." Mem. Ace. Napoli, 
XI, 1902, No. 8, pp. 1-87. 
14. DE LORENZO, G. "I crateri di Miseno." Mem. Ace. Napoli, XIII, 1905, pp. 1-25. 
15. DE STEFANI, C. "I Vulcani Spenti dell' Apennino settentrionale." Boll. Soc. Geol. Ital., 
X, 1891, pp. 499-555- 
1 6. FANTAPPIE, L. "Sui Proietti vulcanici trovati nell' Altipiano tufaceo occidentale dei Vul- 
sinii." Mem. Ace. Line. (5), II, 1898, pp. 547-575. 
17. FUCHS, C. W. C. "Die Laven von Vesuv." Neu. Jahrb., 1866, pp. 667-687; 1868, pp. 
553-5 62 ; l86 9> PP- 42-59. i69-i93- 
18. FUCHS, C. W. C. "Die Insel Ischia." Tsch. min. Mitth., 1872, pp. 196-239. 
19. FUCHS, C. W. C. "Monografia geologica dell' Isola d' Ischia." Mem. Com. Geol. Ital., 
II, 1873, pp. 1-58. (Map.) 
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