103 
Memoirs and Papers by the late 
Dr. W. Crawford Williamson, F.R.S., &c. 
ON the organisation of the fossil plants of the 
COAL measures : 
Pt. i. Calainites; Phil. Trans. 1871, p. 477, seq. 
Pt. ii. Lycopodiacefe, Lepidodeudreie and Sigillariete ; Phil. Trans. 
1871, p. 197, seq. 
Pt. iii. LycopodiaceK (continued); Phil. Trans. 1872, p. 283, seq. 
Pt. iv. Dictyoxylon, Lyginodendrou, Heterangium ; Phil. Trans. 
1873, p. 377, seq. 
Pt. V. Asterophyllites ; Phil. Trans. 1873, p. 41, seq. 
Pt. vi. Ferns ; Phil. Trans. 1874, p. 675, seq. 
Pt. vii. Myelopteris, Psaronius, Kaloxylon; Phil. Trans. 1876, 
p. 1, seq. 
Pt. viii. Ferns, Gymnospermous Stems and Seeds; Phil. Trans. 1877, 
p. 213, seq. 
Pt. ix. Phil. Trans. 1878, p .319, seq. (deals with Astroinyelon, 
Calamites, Asterophyllites, Lepidodendron and Sigillaria, Lepi- 
dodendroid reproductive organs. Ferns, and Cordaites). 
Pt. X. Including an examination of the supposed Radiolarians of 
the Carboniferous Rocks ; Phil. Trans. 1880, p. 493, seq. (deals 
also with Ulodendron, Spores, Ferns, Conceptacles, and 
Calcisphoera). 
Pt. xi. Phil. Trans. 1881, p. 283, seq. (deals with Lepidodendron, 
general conclusions respecting the Carboniferous Lycopods, 
Calamostachys Binneyana and C. Casheana). 
Pt. xii. Phil. Trans. 1883, p. 459, seq. (deals with Myriophylloides 
Willianisonis, Psaronius Renaultii, Zygosporites, Calamites, 
Lepidodendroid plants, Halonia, Sporocarpon, and Dadoxylon). 
Pt. xiii. Heterangium Tilioeoides, and Kaloxylon Hookeri : Phil. 
Trans. 1887, p. 289, seq. 
Pt. xiv. The True Fructification of Calamites; Phil. Trans. 1887, 
p. 47, seq. 
