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Epiphysis. EP. Epencephalon. IN. Infundibulum. LH. Lobus hippocampi. LI. Lobi 

 inferiores. LT. Lamina terminalis. M. Mesencephalon (optic lobes). ML. Myelen- 

 cephalon (spinal cord). MT. Metencephalon (medulla). MT '. Anterolateral lobes of 

 metencephalon. P. Prosencephalon (cerebral hemispheres). P T. Pituitary body. R. 

 Olfactory lobes. SV. Saccus vasculosus. T. Thalamencephalon. 4. Fourth ven- 

 tricle. Numbers I-X. Cranial nerves, i. First spinal nerve. 

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