Puatres XXI-XXV. 
XXVI-XXX. 
XXXI. 
XXXII, XXXII. 
XXIV. 
Ms 
XXXV, XXXVI. 
XXXVI. 
XXXVI. 
b6.6.60.6 
XIL-XLII. 
XLITI. 
XLIV-XLVI. 
XLVII, XLVIII. 
XLIX-LII. 
LI. 
LIV, LV. 
LVL 
LVII-LXIV. 
LXV-LXVII. 
LXVIII, LXIX. 
LXxX. 
LXXI-LXXVI. 
LXXVII, LX XVIII. 
LXXIX-XC. 
XCI-XCV. 
XCVI, XCVII. 
XCVIII-CXII. 
CXITI-CX XII. 
CX XITI-CXXIX. 
CXXX-CXXXVII. 
CXXXVIII-CXLIV. 
ILLUSTRATIONS. 
Pages. 
Ferns and fern allies from the Trias of Pennsylvania. 432-440 
Cycadaceous plants from the Trias of Pennsylvania.. 442-450 
Ginkgoaceous and pinaceous plants from the Trias of 
Pennsylvania 452 
Pinaceous plants from the Trias of Pennsylvania.... 454, 456 
Pinaceous and monocotyledonous plants from the 
Triasof Pennsylvania... 222 2 sesweeseecsecaasess 458 
Dendrophycus from the Trias of Connecticut and 
Maryland cess wsseindines ome seescecwesousissieae 460, 462 
Araucarioxylon from the Trias of North Carolina... 464 
Ferns from the Trias of North Carolina ...-........- 466 
Ferns and cycadaceous plants from the Trias of North 
Carolinas atc ee Agena Se tinea eels e aaeretane 468 
Cycadaceous plants from the Trias of North Carolina. . 470-474 
Miscellaneous plants from the Trias of North Carolina. 476 
Pinaceous plants from the Trias of North Carolina.. 478-482 
Pinaceous plants, etc., and plants of uncertain affinity ; 
from the Trias of North Carolina........_.. beeeed 484, 486 
Ferns from the Jurassic of Oroville, California....,. 488-494 
Ferns and cycadaceous plants from the Jurassic of 
Oroville, California.............---..------------ 496 
Ferns from the Jurassic of Oroville, California... - 498, 500 
Ferns and cycadaceous plants from the Jurassic of Oro- 
Ville; (California) tccswan'tewceeteer sock canes se 502 
Cycadaceous plants from the Jurassic of Oroville, Cali- 
POWAY 6 Seicysi's a see te sea enegee te ewseecee 2a 504-518 
Miscellaneous plants from the Jurassic of Oroville, 
Californiaiss ju geseaios sos clastcerse se cee saaisreatinraes 520-524 
Cycadeoidea nigra yixisc> we ntciuon® ss teens te tex 526, 528 
Illustration of the genus Cycadella._........----.--- 530 
Gyéadella Reedil sc iccccinsaccecde bee eeehiee S28 5382-542 
Cycadella Beecheriana.._........------------------- 544,546 
Cycadella wyomingensis.._......-..------.-------- 548-570 
Cycadella Knowltoniana.........-.---------------- 572-580 
Cycadella compressa .....--..-----------+-----+--- 582, 584 
Cycadella jurassica.......-----------+--+-++------- 586-614 
Cycadella nodosa... ...-.-.----------+--+- sees eens 616-634 
Cycadella cirrata....--...--.-.-----------+--++---- 636-648 
Cycadella exogena ......---------------------+----- 650-664 
Cycadella ramentosa .......-..-------------------- 666-678 
