Note 87 — Chapter VII

Man’s Place in Nature, p. 52. I may here appropriately allude to a paper which elicited a good deal of discussion some years ago. It was read before the Victoria Institute in March, 1872, by Dr. Frederick Bateman, under the title “Darwinism tested by Recent Researches in Language;” and its object was to argue that the faculty of articulate speech constitutes a difference of kind between the psychology of man and that of the lower animals. This argument Dr. Bateman sought to establish, first on the usual grounds that no animals are capable of using words with any degree of understanding, and, second, on grounds of a purely anatomical kind. In the text I fully deal with the first allegation: as a matter of fact, many of the lower animals understand the meanings of many words, while those of them which are alone capable of imitating our articulate sounds not unfrequently display a correct appreciation of their use as signs. But what I have here especially to consider is the anatomical branch of Dr. Bateman’s argument. He says:—“As the remarkable similarity between the brain of man and that of the ape cannot be disputed, if the seat of human speech could be positively traced to any particular part of the brain, the Darwinian could say that, although the ape could not speak, he possessed the germ of that faculty, and that in subsequent generations, by the process of evolution, the ‘speech centre’ would become more developed, and the ape would then speak.... If the scalpel of the anatomist has failed to discover a material locus habitandi for man’s proud prerogative—the faculty of Articulate Language; if science has failed to trace speech to a ‘material centre,’ has failed thus to connect matter with mind, I submit that speech is the barrier between men and animals, establishing between them a difference not only of degree but of kind; the Darwinian analogy between the brain of man and that of his reputed ancestor, the ape, loses all its force, whilst the common belief in the Mosaic account of the origin of man is strengthened.” Now, I will not wait to present the evidence which has fully satisfied all living physiologists that “the faculty of Articulate Language” has “a material locus habitandi;” for the point on which I desire to insist is that it cannot make one iota of difference to “the Darwinian analogy” whether this faculty is restricted to a particular “speech-centre,” or has its anatomical “seat” distributed over any wider area of the cerebral cortex. Such a “seat” there must be in either case, if it be allowed (as Dr. Bateman allows) that the cerebral cortex “is undoubtedly the instrument by which this attribute becomes externally manifested.” The question whether “the material organ of speech” is large or small cannot possibly affect the question on which we are engaged. Since Dr. Bateman wrote, a new era has arisen in the localization of cerebral functions; so that, if there were any soundness in his argument, one would now be in a position immensely to strengthen “the Darwinian analogy;” seeing that physiologists now habitually utilize the brains of monkeys for the purpose of analogically localizing the “motor centres” in the brain of man. In other words, “the Darwinian analogy” has been found to extend in physiological, as well as in anatomical detail, throughout the entire area of the cortex. But, as I have shown, there is no soundness in his argument; and therefore I do not avail myself of these recent and most wonderfully suggestive results of physiological research.