Diseases of the nervous system .. . por- on of the 4thventricle. Middle portionof the 4thventricle. Posterior por-tion of the 4thventricle. oblon-. FiG. 45.—Diagram of Fig. 44. (After Toldt.) Fig. 46.—Section through the An-terior Corpora Quadrigemina. M. obliquu? superior Ganglion ciliare —N. trochlearisSmall cell median nucleus (for the M. sphincter pupilla?) AquacHuctus cerebri (Sylvii) Colliculus superior of thecorpora quadrigemina —: M. sphincter pupillse~ M. ciliaris —t M. rectus lateralis For the external ocularmuscles For the internal ocular muscles(Radix brevis ganglii cilia

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Diseases of the nervous system .. . por- on of the 4thventricle. Middle portionof the 4thventricle. Posterior por-tion of the 4thventricle. oblon-. FiG. 45.—Diagram of Fig. 44. (After Toldt.) Fig. 46.—Section through the An-terior Corpora Quadrigemina. M. obliquu? superior Ganglion ciliare —N. trochlearisSmall cell median nucleus (for the M. sphincter pupilla?) AquacHuctus cerebri (Sylvii) Colliculus superior of thecorpora quadrigemina —: M. sphincter pupillse~ M. ciliaris —t M. rectus lateralis For the external ocularmuscles For the internal ocular muscles(Radix brevis ganglii ciliaris) Tract of the pupillaryfibers of the N. opticus \ I^orpus geniculatumraediale Gyrus angu-Jaris (?) 7- Central tract forthe nerves ofthe ocular muscles Thalamus ?orpus genicuitum laterale Tractus opticus 11 i1=1

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