On the posterior lobes of the cerebrum of the quadrumana / by William Henry Flower ; communicated by Dr. Sharpey.

  • William Henry Flower
Date:
[1862]
Catalogue details

Licence: Public Domain Mark

Credit: On the posterior lobes of the cerebrum of the quadrumana / by William Henry Flower ; communicated by Dr. Sharpey. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    15/22 (page 199)
    1. That the posterior lobes, whether we understand by the term that portion of the cerebrum which lies over the cerebellum, or, taking our definition from internal struc- tm’e, that part which is situated behind the hippocampus major, exist in all the Qua- drumana, and are characterized in all by the presence of a deep longitudinal sulcus (calcarine) on their inner sui-face. 2. That the length of this part of the brain, in relation to that of the antero-median portion, varies in different members of the series, but is greater in many of the Apes than it is in Man, and attains its maximum in the smaller members of the family Pla- tyrrhina. 3. That the depth and complexity of the characteristic involution of the cortical grey matter surrounding the calcarine sulcus (or, in other words, that part which, according to its homology with the structm-e so named in the human brain, must be called “ hippo- campus minor”) is one of the most striking characteristics of the typical Simian brain, as it is greatest in Cercopithecus, Macacus, Cynocephalus, and Cehus, less in the anthro- poid Apes, and least of all, in proportion to the mass of cerebral substance contained in the lobe, in Man. Appendix. Table showing the comparative length of the posterior lobes of the cerebrum in certain Quadrumana, and other Mammalia, measured upon the plan described at p. 191. Actual length in inches. Proportion. Antero-median portion. Posterior portion. Antero-median portion. Posterior portion. Homo (average) 4*40 2-35 100 53 Pithecus satyrus 2-00 1-00 100 50 Presbytes leucoprymnus 1-50 •70 100 47 Cercopithecus pygerythrus 1-65 •90 100 54 C. sabaeus 1-65 •90 100 64 C. mona 1-20 •65 100 54 Macacus silenus 1-75 •95 100 54 M. erythraeus 1-75 •90 100 52 Cynocephalus porcarius 2-20 1-25 100 57 Cebus apella 1-60 •95 100 59 Nyctipithecus felinus 1-20 •70 100 58 Hapale cedipus •85 •50 100 59 H. jacchns •80 •50 100 62 Lemur nigrifrons 1-00 •35 100 35 Stenops Javanicus •90 •40 100 44 Otolicnus ? .• •85 •35 100 41 Pteropus Edwardsii •79 •18 100 24 Erinaceus Europaeus •60 •07 100 11 Cercoleptes caudivolvulus 1-20 •40 100 33 Felis domesticus 1-20 •25 100 21 Canis familiaris 1-55 •55 100 35 Equus caballus 3-50 1-25 100 35 Sus scrofa 2-15 •55 100 25 Dicotyles torquatus 2-00 •40 100 20 Lepus cuniculus ]-00 •20 100 20