. Transactions . Longitudinal section ot ihf uplic nerve, higii power,showing absence of axis cylinders from the nerve. 158 DISEASES OF THE EETINA AND CHOROID. upper part of the spinal cord being absent. But therewas a small amount of substantia-medullo-vasculosa ofRecklinghausen. No olfactory nerve could be found. Theeyes were enucleated and placed in hardening solutions,and the optic nerves, which Avere small in size, were tracedto the optic foramina, where they became lost in the duramater in a similar way to the spinal, accessory, and hypo-glossal nerve sheaths. No trace of any intra-crani
. Transactions . Longitudinal section ot ihf uplic nerve, higii power,showing absence of axis cylinders from the nerve. 158 DISEASES OF THE EETINA AND CHOROID. upper part of the spinal cord being absent. But therewas a small amount of substantia-medullo-vasculosa ofRecklinghausen. No olfactory nerve could be found. Theeyes were enucleated and placed in hardening solutions,and the optic nerves, which Avere small in size, were tracedto the optic foramina, where they became lost in the duramater in a similar way to the spinal, accessory, and hypo-glossal nerve sheaths. No trace of any intra-cranial Fig. Horizontal section through the posterior part of the globe,showing the (entrance of the optic nerve. Note the deepcupping of the disc. portion of the nerves, chiasma, or tracts could be internal carotid artery ended in a very large branch,which mainly supplied the orbit. Tha skull was macerated and the tissue removed as faras possible. The base of the skull was asymmetrical, itsrounded outline ])eingdue to the upward projection of thebase, which made tin; pharyngeal fossa on the undersurfa(!e very deep, ^riic; foj-iiincii ma^-ninii was incomplete])OHteriorly, tlic posterior portion of llie occipital bone})eing absent. The ])rominence due to tlie semicircular RETINA AND OITIC NERVES IN ANENCEPHALY. ) canals was very iiuirkLMl. Ihe body of tlio sphenoid waswell developed, the optic foramen beino; of hir^e was no criljriforni plate to the ethmoid, it bein^represented by two slit-like orifices which opened into thenose. The orbits were symmetrical, large, and shal
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Keywords: ., bookcentury1800, bookdecade1880, bookpu, booksubjectophthalmology
