196 
THE ROMAN COMAGMATIC REGION. 
Bagnaia 41, 56, 57 
Bagnorea 67, 69, 70 
Bagnoreal ciminose : 
Analysis of 67, 147 
Description of 67, 70 
Bagnoreal vicose : 
Analysis of 97, 147 
Description of 67, 70 
Bagnoreal vulsinose: 
Analysis of 36, 147 
Description of 40 
Barium, distribution of 188 
Beaveral j aneirose, analysis of 51 
Beemerose : 
Analysis of 47, 147 
Description of 46, 49 
Occurrence of 49, 161, 163 
Berican Hills 1 
Biotite-latite : 
Analysis of 56, 88, 147 
Description of 54, 88 
Biotite-vulsinite, analysis of 88, 147 
Bolsena 4, 31, 33, 59, 132, 161 
Bolsenal vulsinose: 
Analysis of 31, 59, 147 
Description of 30, 34 
Bolsenal Vulsinose-pulaskose, analysis of. ..43, 147 
Boscoreale 107 
Boval albanose : 
Analysis of 139, 147 
Description of 138, 140 
Bracciano 97, 99 
Braccianose : 
Analysis of 104, 109, 113, 116, 118, 147 
Description of. 103, 106, 107, 108, 111, 115, 117, 120 
Occurrence of.. 105, 107, 110, 114, 116, 120, 
161, 163, 164, 165 
Breccia . 55 
Campanian District. .2, 8, 21, 26, 75, 78, 104, 
105, 116, 118, 120, 165, 166, 167 
Campiglia 1 
CapodiBove 139, 140 
Capodimonte 4 
Capranica 41 
Caprara 31 
Carbone 21 
Casa Fredda 21 
Casi 26, 33 
Cavorcie 41, 65 
Ceccanal fiasconose 129 
Ceccano 129 
Cecilite : 
Analysis of 139, 147 
Description of 138 
Cellal venanzose 159 
Cerveteri 1 
Ciminian District....!, 5, 26, 29, 36, 39, 41, 
56, 57, 59, 61, 63, 65, 67, 70, 72, 73, 75, 
78, 81, 92, 94, 162, 166, 167 
Ciminite : 
Analysis of 63, 75, 147 
Description of 62, 74 
Ciminose : 
Analysis of 59, 63, 67, 72, 147 
Description of 58, 62, 66, 67, 70, 71, 73 
Occurrence of 61, 66, 70, 73, 161, 162, 163, 165 
Cimino Volcano 5, 57, 61, 63, 65, 66, 162, 163 
Classification of rocks 11 
Clathrate texture 109 
Colonetta 63, 65 
Comagmatic region, use of term v 
Copper, presence of 135, 149 
Correlation of types 141 
Cremate 78 
Croce di San Martino 81 
Crocicchie 109, 110, 113 
Cuma 23, 24, 29 
Cumal phlegrose : 
Analysis of 23, 147 
Description of 22, 27 
Dellenose 170 
Dikes, rarity of 144 
Epomeo Volcano 8 
Euganean Hills 1 
Fedorovite, analysis of 134 
Feldspar, origin of, in leucitite 112 
Fiasconose : 
Analysis of 127, 147 
Description of 126, 129 
Occurrenceof 128, 161, 164 
Fiescolal ciminose : 
Analysis of 63, 147 
Description of 62, 66 
Fiordinal fiasconose : 
Analysis of 127, 147 
Description of 126, 129 
Fiordine 127, 128 
Flow breccia 55 
Foglianal ciminose-auruncose : 
Analysis of 80, 147 
Description of 79, 82 
Foglianal vicose: 
Analysis of 92, 147 
Description of 91, 95 
Fontana Fiescoli 63 
Formal descriptions, discussion of 15 
Fosso della Parchetta 72, 73 
Foyaite, analysis of 51 
Frascati 132 
Frosinone 114, 135, 137 
Galeral albanose-jugose: 
Analysis of 124, 147 
Description of 123, 125 
Galeral braccianose : 
Analysis of 109, 147 
Description of 108, 111 
Galeroid habit 109 
Gauteite, analysis of 75 
Glass, occurrence of 160 
