word of
qualification, "for the true proportion in which the cerebrum covers the
cerebellum in the highest Apes," is exactly that unacknowledged copy of
Schroeder van der Kolk and Vrolik's figure whose utter inaccuracy had
been pointed out years before by Gratiolet, and had been brought to
Professor Owen's knowledge by myself in the passage of my article in the
'Natural History Review' above quoted.

I drew public attention to this circumstance again in my reply to
Professor Owen, published in the 'Athenaeum' for April 13th, 1861; but
the exploded figure was reproduced once more by Professor Owen, without
the slightest allusion to its inaccuracy, in the 'Annals of Natural
History' for June 1861!

This proved too much for the patience of the original authors of the
figure, Messrs. Schroeder van der Kolk and Vrolik, who, in a note
addressed to the Academy of Amsterdam, of which they were members,
declared themselves to be, though decided opponents of all forms of the
doctrine of progressive development, above all things, lovers of truth:
and that, therefore, at whatever risk of seeming to lend support to
views which they disliked, they felt it their duty to take the first
opportunity of publicly repudiating Professor Owen's misuse of their
authority.

In this note they frankly admitted the justice of the criticisms of
M. Gratiolet, quoted above, and they illustrated, by new and careful
figures, the posterior lobe, the posterior cornu, and the hippocampus
minor of the Orang. Furthermore, having demonstrated the parts, at
one of the sittings of the Academy, they add, "la presence des parties
contestees y a ete universellement reconnue par les anatomistes presents
a la seance. Le seul doute qui soit reste se rapporte au pes Hippocampi
minor...A l'etat frais l'indice du petit pied d'Hippocampe etait plus
prononce que maintenant."

Professor Owen repeated his erroneous assertions at the meeting of the
British Association in 1861, and again, without any obvious necessity,
and without adducing a single new fact or new argument, or being able
in any way to meet the crushing evidence from original dissections of
numerous Apes' brains, which had in the meanwhile been brought forward
by Prof. Rolleston,* ([Footnote] *On the Affinities of the Brain of
the Orang. 'Nat. Hist. Review', April, 1861.) F.R.S., Mr. Marshall,*
([Footnote] *On the Brain of a young Chimpanzee. 'Ibid.', July, 1861.)
F.R.S., Mr. Flower,* ([Footnote] *On th