100 



INDEX 



Pierygotiis, 4 



Ptilophijton, 9, 17, 31 (Fig. 12), 32 



(Fig. 13), 33 (Fig. 14), 35, iV7 , 



50, 78, 81 

 Ptilopliyton Iiostimense. 33 (Fip-. 14) 

 P. Thomsoni, 10, 31 (Fig. 12), 32 



(Fig. 13) 



Reid, J., 29 



Khacophyllum, 84 



Rhacopteris, 9, 11, 61 (Fig. 33), 69, 



79 (Fiij-. 42), 81, 84 

 lihaajji/eris fiircillaia. 01 (Fig. 33) 

 R. jxdiiciilijera, 79 (Fig. 42) 

 Hhiz()carj).s (Hydropterideae), 39, 46 

 Rhynia, 3, 15,' 10, 20, 24, 25 (Fig. 



7), 26, 44, 46 

 Rhyiiia Clivynne-Vaughani, 1,2, 22- 



25 (Fig. 7), 26 

 Rhynie, Aberdeenshire, 5 

 Roragen, 6, 7, 12, 43, 44 

 Russia, 4, 6, 7, 12, 67, 68, 91 



Schimper, W. P., 11 



Scotland, 3, 5, 7, 10, 11, 14, 16, 20, 



29, 38, 42, 91 

 Scott, D. H., 72 



Sedgwick ]Museum, Cambridge, 76 

 SelagineUa, 86 

 Sigillaria, 48, 09, 80 

 Silurian, 5, 8, 16, 38, 75, 89 

 Spermophyta, 71 



Sphenophyllales, 71, 77, 86, 87, 88 

 Sphenophyllum, 9, 12, 52 (Fig. 24), 



54, 70, 77 

 Sphoio/ihylluni Dmvsoni, 77 

 S. sublciicniniNni. 52 (Fig. 24) 

 Sphenopsida, 9, 10, 52-56, 05, 71, 



72, 74-77, 80, 87 

 Sphenopteridmm, 9, 10, 12, 13, 61 



(Fig. 34), 62 (Fig. 35), 81 (Fig. 



44), 83 

 Sphenopleridium condmsorum, 11 

 S. moravicum, 81 (Fig. 44) 

 S. Tigidum, 11, 01 (Fig. 34), 02 

 Sphenopterids, 84 

 Sphenopteris, 9, 11. 12, 13, 64, 79, 



81, 82 (Figs. 45 and 40) 

 Sphenopteris affinis, 81, 82 (Fig. 45) 



,S'. bifida, 81, 82 (Fig. 40) 



S. deiisepinuatu, 11 



.S'. Ilook-eri, 11 



"Spines" on axis of Psilophyton, 



18-20 

 Spiraptcris, 12, 35 

 Si)itzlKTgen, 0, 7, 12, 50, 07 

 Sporocliitus, 50 

 Sporogoniies, 12, 44, 45, 71 

 Stele, comparison of that of Psilo- 



tales with that of Psilophyton, 



88; origin of in the earlier 



Cormophyta, 89-91 

 Sternberg, C. von, 08 

 Stigmaria, 12, 04, 90 

 Stringoceplialus Burtini, 5 

 Stur, D., 37, 51 

 Sykes (Tlioday), M. G., 80 



Taeniocrada, 9, 42, 47 * 

 Telangiion., 11 

 Thoday (Sykes), M. G., 80 

 Thursophyton, 9, 10. -12, 28 (Fig. 



10), 29, 30 (Fig. 11), 31, 50, 



51, 85, 80 

 Thursophyton Miller i, 10, 28 (Fig. 



10), 29, 30 (Fig. 11), 31 

 T. Reidi, 10, 29, 30 

 Tmesipteris, 49, 87, 88 

 Triphyllopteris, 11 



Unger, F., 09 



United States, 2, 0, 7, 13, 10, 37, 



38, 42, 50, 67, 91 

 Unknown genera in Devonian rocks, 



69 



Victoria, 6, 13 



Wales 4 



White' D., 2, 37, 42, 47, 66, 67, 



68 

 Wood, Petrified, 13, 91 



Xenoiheca, 11, 67 



Zosterophyllum, 50, 85 

 Zosterophyllnm nupetonianurn; 11, 

 41 (Fig. 22), 42 



CAMBRIDGE: FEINTED BY J. B. PEACE, M.A., AT THE TJNIVERSITy PRESS 



