46 PkOCBB DINGS Of THfi 



attention anion<^ botanists; and from Ibi'S onwards you have 

 taken a loreiiiost |)lace in advancing our know ledge ot" the hiter 

 Pala50zoic flora. You began by co-operating w itii Prof. William- 

 son in three imi)oi-tant memoirs on the Calamites and on 

 Lj/f/inodendron, publi.shed in the ' Philosophical Transactions,' for 



1895 ; and after his death in that year you continued alone 

 to add oilier memoirs to the same series. In your account of 

 the ISphenopliyllales, you described Sphenophyllum fertile, a new 

 form of fructification, and also Cheirostrobas, a remarkable cone 

 to be regarded as the type of a new family. Your memoir 

 on Zie/)«/ocary»OM ali'orded the final proof that some Lycopodiaceous 

 plants in the coal-period developed seed-like bodies, and you 

 made another valuable contribution to our knowledge of lycopod 

 fructification by your description of Spencerites. Among the 

 Pteridosperms, you were the first to recognise a species of 

 Medidhsa from British Carboniferous rocks, and your descrip- 

 tions both of that geiuis and IJeterawjiuin, and of the new 

 genus Sutdijffia, made fundamental advances. You also joined 

 Prof. Y. W. Oliver in an exhaustive study of Layenostoma which 

 established its reference to Lyginodendron. Among your numerous 

 contributions to our knowledge of primitive terns, your discover}' 

 of Botrichio.rylon, with its secondary wood, is memorable ; and 

 you were the first to find germinating spores in Stauropteris. In 

 otlier memoirs you have described the stem-structure of the 

 Cycadotilices and Cordaitales, particidarly Calamopitys, Mesoxylon, 

 and I'itys. Y'our researches, indeed, have thrown light on the 

 phylogeny and relationships of almost every group of Carboni- 

 ferous plants, and your joint work witli Prof. E. C. Jeffery on 

 Stereopteris, Arch(:i:opitys, and other plants from the AVaverly 

 Shales of Kentucky, deals with some of their immediate ancestors. 



While actively engaged in research yourself, you have also 

 stimulated others to follow your example. As Assistant Professor 

 first at University College, then at the Eoyal College of Science, 

 and afterwards as Honorary Keeper of the Jodrell Laboratory at 

 Kew, you were able to exert personal influence. In 1884 you 

 and Prof. Bower published a useful translation of de Bary's 

 " Comparative Anatouiy of the Vegetative Organs of the Phanero- 

 gams and I'erns "' ; in 18S8 you helped to revise Huxley and 

 Martin's well-known " Practical Biology " ; while in 189-1 and 



1896 you reached a still wider circle of students by the two parts 

 of your admirable " Introduction to Structural Jiotany." In 

 1900 you published the first edition of your '• Studies in Fossil 

 Botany,'' which has become a classic and is now beijig issued in a 

 third edition. In 1908 you revised the English translation of 

 Solereder's " Systematic Anatomy of the Dicotyledons," and in 

 1911 you wrote a little book which has fascinated many of us, 

 "The Evolution of Plants.-" Since 1893 you have also promoted 

 botanical science by editing the 'Annals of Botany.' 



Finally, the Linneaii Society remembers with gratitude your 

 long and devoted service as member of Council, as Secretary, and 



