ZAPATA ZYGOSPIRA 209 



55 



Page 



Zapata formation, Distribution of 6, 129 



, Equivalence of the Lafayette and the 6, 130 



of Cuba 7, 84-86 



San Domingo and Jamaica 6, 1 ,"50 



Zeiller, R., cited on Carboniferous fossils 2, 535 



floras of Franco-Belgian coal field 8, 299, 302 



Paleozoic plants 4, 121, 122, 127 



ZiGNO, AcHiLLE DE, cited on Paleozoic corals 4, 126, 127 



Zinc deposits of Wisconsin 5, 25 



— ores. Geologic age of 5, 31 



ZiRKEL, F. , cited on basaltic obsidians 8, 77 



basalts 6, 416 



biotite-granite 6, 472 



dolomites 6, 191 



gneiss ?', 120, 121 



gneissoid structure 7, 130 



leucite localities 8, 170, 175-177, 179, 181, 182 



Nevada siilimanite 7, 284 



rock structures 7, 133 



tourmaline in Saxony ' 10, 26 



ZiTTEL, Karl von, cited on Paleozoic corals 3, 257 



— , Discussion of Silurian fish remains by 3, 168 



— , Figure of Lepidocentrus rhenanus properly oriented by 7, 224 



Zygospira bed, Description of. 3, 363 



XXVII— Bin.r,. fiEor,. Soc. Am. 



