Page:Natural History Review (1861).djvu/85

Rh lobus anterior paullulum acuminatus; b, lobus medius; c, lobus posterior, "cerebellum obtegens." Fig. 2, represents the brain of "Simia rhesus;" and the explanation of the figures says: "a, lobus anterior; b, lobus medius; c, lobus posterior." Fig. 3, a figure of the brain of Simia sabœa, and fig. 4, of "Simia capucina" have the same lettering, and the letters have the same signification.

And, to permit of no mistake, Tiedemann, at page 48 of the same work, tells us expressly:—

In 1825, Tiedemann, describing the brain of the orang (Hirn des Orangs mit dem des Menschen verglichen), particularly states that each hemisphere is, as in man, divided into three lobes—an anterior, a middle, and a posterior; and that the ovate cerebral hemispheres cover the cerebellum almost entirely, though they do not, as in man, project beyond its posterior margin.

In the third volume of the second edition of the "Leçons," Cuvier expressly affirms, in speaking of the apes:—

And, in the "Regne Animal," he gives as part of the definition of the order Quadrumana: "Le cerveau a trois lobes de chaque côté, dont le postérieur recouvre le cervelet."

In his elaborate essay "On the brain of the negro, compared with that of the European and the orang outang," published in the Philosopical Transactions for 1838, Tiedemann's zeal for the cause of the oppressed black has occasionally led him into something very like special pleading; and yet he does not dream of hinting the absence of the posterior, or third lobe, present in the negro's brain, from that of the orang. His summary, at p. 518, runs thus:—