Richard Lydekker, Dictionary of National Biography (1901)
“ The year 1872 saw the issue of the first edition of 'A Manual of Palaeontology for the use of Students,' in one volume. The second edition, which was expanded to two volumes, appeared in 1879; while the third and enlarged edition, written in collaboration with the author of the present notice, was published in 1889. His other works of the same nature are: 'Introduction to the Study of Biology' (1872) , 'The Ancient Life-History of the Earth ' (1877) , and ' Synopsis of the Classification of the Animal Kingdom ' (1882) . ”
