ITALIAN PETROLOGICAL SKETCHES 



849 



of returning my sincere thanks for his invaluable aid and advice. 

 Nos. 7 and 9 were made in my own laboratory. The discussion 

 of these analyses will be reserved for the final paper. 



TABLE II. 



1. Vulsinite, near Vetralla, H. S. Washington anal. 



2. Ciminite, Fontana Fiesole, Viterbo, H. S. Washington anal. 



3. Ciminite, West Slope of Monte Cimino, vom Rath, op. cit., 304. 



4. Leucite-Trachj'te, " Petrisco," Viterbo, vom Rath, op. cit., 298. 



5. Leucite-Trachyte, Madonna di Lauro, Vetralla, A. Rohrig anal. 



6. Leucite-Trachyte, Gronndmass, Vico Crater, Ricciardi, op. cit. 



7. Leucite-Trachyte, Monte Venere, H. S. Washington anal. 



8. Leucite-Trachyte, Groundmass, Monte Venere, Ricciardi, op. cit. 



9. Phonolite, block in Tuff, west of Viterbo, H. S. Washington anal. 

 10. Phonolite, Monti Cimini, vom Rath, op. cit., 581. 



Henry S. Washington 



' Trace of LioO. 



