Carruthers, W., “On Fossil Cycadean Stems from the Secondary Rocks of Britain,” published in the _Transactions of the Linnean Society_, vol. xxvi, 1870. *Geikie, A., _A Text-Book of Geology_, vols. i and ii, London, 1903. Grand’Eury, C., “Flore Carbonifère du département de la Loire et du centre de la France”, published in the _Mémoirs de l’Académie des Sciences_, Paris, vol. xxiv, 1877. *Kidston, R., _Catalogue of the Palæozoic Plants in the Department of Geology and Palæontology of the British Museum_, London, 1886. *Lapworth, C., _An Intermediate Text-Book of Geology_, twelfth edition, London, 1888. Laurent, L., “Les Progrès de la paléobotanique angiospermique dans la dernière decade”, _Progressus Rei Botanicæ_, vol. i, Heft 2, pp. 319-68, Jena, 1907. Lindley, J., and Hutton, W., _The Fossil Flora of Great Britain_, 3 vols., published in London, 1831-7. Lyell, C., _Principles of Geology_ and _The Student’s Lyell_, edited by J. W. Judd, London, 1896. Oliver, F. W., and Scott, D. H., “On the Structure of the Palæozoic Seed, _Lagenostoma Lomaxi_”, published in the _Transactions of the Royal Society_, series B, vol. cxcvii, London, 1904. Renault, B., _Cours de Botanique fossile_, Paris, 1882, 4 vols. Renault, B., _Bassin Houiller et Permien d’Autun et d’Epinac_, Atlas and Text, 1893-6, Paris. *Scott, D. H., _Studies in Fossil Botany_, London, second edition, 1909. Scott, D. H., “On the Structure and Affinities of Fossil Plants from the Palæozoic Rocks. On _Cheirostrobus_, a New Type of Fossil Cone from the Lower Carboniferous Strata.” Published in the _Philosophical Transactions of the Royal Society_, vol. clxxxix, B, 1897. *Seward, A. C., _Fossil Plants_, vol. i, Cambridge, 1898. Seward, A. C., _Catalogue of the Mesozoic Plants in the Department of Geology of the British Museum_, Parts I and II, London, 1894-5. *Solms-Laubach, Graf zu, _Fossil Botany_ (translation from the German), Oxford, 1891. Stopes, M. C., and Watson, D. M. S., “On the Structure and Affinities of the Calcareous Concretions known as ‘Coal Balls’”, published in the _Philosophical Transactions of the Royal Society_, vol. cc. *Stopes, M. C., _The Study of Plant Life for Young People_, London, 1906. *Watts, W. W., _Geology for Beginners_, London, 1905 (second edition). Wieland, G. R., _American Fossil Cycads_, Carnegie Institute, 1906. Williamson, W. C., A whole series of publications in the _Philosophical Transactions of the Royal Society_ from 1871 to 1891, and three later ones jointly with Dr. Scott; the series entitled “On the Organization of the Fossil Plants of the Coal Measures”, Memoir I, II, &c. Zeiller, R., _Éléments de Paléobotanique_, Paris, 1900. *Zittel, K., _Handbuch der Palæontologie_, vol. ii; _Palæophytologie_, by Schimper & Schenk, München and Leipzig, 1900. Those marked * would be found the most useful for one beginning the subject. GLOSSARY