This point was very early appreciated in our work; and in a paper read before the Anthropological Institute[4] in the year 1879, but not published, this continuity was insisted upon by means of diagrams, both of animal and plant life, and its connection with heredity was clearly shown, though its relation to memory was only dimly seen. From this paper the following passage may be quoted: "If, as I believe, the origin of form and decoration is due to a process similar to the visualising of object-thoughts in the human mind, the power of this visualising must commence with the life of the being. It would seem that this power may be best understood by a correct insight into biological development. It has always excited wonder that a child, a separate individual, should inherit and reproduce the characters of its parents, and, indeed, of its ancestors; and the tendency of modern scientific writing is often to make this obscure subject still darker. But if we remember that the great law of all living matter is, that the child is _not_ a separate individual, but a part of the living body of the parent, up to a certain date, when it assumes a separate existence, then we can comprehend how living beings inherit ancestral characters, for they are parts of one continuous series in which not a single break has existed or can ever take place. Just as the wave-form over a pebble in a stream remains constant, though the particles of water which compose it are ever changing, so the wave-form of life, which is heredity, remains constant, though the bodies which exhibit it are continually changing. The retrospection of heredity and memory, and the prospection of thought, are well shown in Mrs. Meritt's beautiful diagram." This passage illustrates how parallel our thoughts were to Mr. Butler's, whose work we did not then know. What we did not see at the time was, that the power of thinking or memory might antedate birth. It is quite impossible adequately to express our sense of admiration of Mr. Butler's work. Granting then the physical identity of offspring and parent, the doctrine of heredity becomes plain. The child becomes like the parent, because it is placed in almost identical circumstances to those of its parent, and is indeed part of that parent. If memory be possessed by all living matter, and this is what we now believe, we can clearly see how heredity acts. The embryo develops into a man like its parent, because human embryos have gone through this process many times--till they are unconscious of the action, they know how to proceed so thoroughly. Darwin, after deeply pondering over the phenomena of growth, repair of waste and injury, heredity and kindred matters, advanced what he wisely called a provisional hypothesis--pangenesis.