I. On the evolution of the vertebral column of amphibia and amuivta

This paper, with that by Miss Abbott and myself (‘Phil. Trans.,’ B, 1895), forms a rounded-off investigation of the evolution of the vertebral column. I have to thank Miss Abbott for the preparation of sections and for hundreds of preliminary consecutive drawings of Salamandra maculosa, Triton critatus, and of Hyla septentrionalis. Mr. H . H. Brindley most generously placed a t my disposal an enormous number of sections through the tails of embryos and adults of Hoplodactylus pacificus, Platydactylus gleadovi, and of Lacerta vivipara, which he had already prepared for some other occasion.