BRAIN 



233 



BRAN- 



SUPERIOR Aspect, or Convexity of the Brain. 

 I,i. Fissure of Rolando. 2,2. Ascending frontal convolution. 3,3. As- 

 cending and suoerior parietal convolutions. 4, 4. First frontal con- 

 volution. 5, 5. Second frontal. 6, 6. Third frontal. 7, 7. First occi- 

 pital. S. 8. Second occipital. 9, 9. Third occipital. 10. Anterior 

 extremity of corpus callosutn. 11, 11. Posterior extremity. 



Inferior Aspect of the Brain. 



nterior extremity of corpus callosum. 2. Optic chiasm. 3. Tuber 



nereum and infundibulum. 4. Corpora albicantia, or mamillaria. 



Pons varolii. 6. Third nerve. 7. Aqueduct of Sylvius. 8. Testes. 



1. Inferior surface of frontal lobe. 11. Convolution of the fissure of 



Abdominal. See Solar Plexus. B., After-. 

 See Metencephalon. B. Axis, that portion 

 of the brain-substance including the island 

 of Reil, the basal ganglia, the crura, pons, 

 medulla, and cerebellum. B. -bladder, a 

 cerebral vesicle of the embryo. B., Com- 

 pression of, may arise from injury or dis- 

 ease, from serous exudation, blood extrava- 

 sation, etc. See Compression. B., Con- 

 cussion of, is the result of injury producing 

 symptoms of loss of power and function 

 generally. See Concussion. B.-fag, mental 

 exhaustion due to overwork. B. Fever 

 See Meningitis ; also Synonym of Typhoid 

 Fever. B., Fore-. See Prosencephalon. 

 B., Hind-. See Epencephalon. B., In- 

 callosal, one in which there is a complete 

 absence of the corpus callosum. This is 

 commonly associated with mental and physi 

 cal weakness, amounting often to idiocy. 

 B., Inter-. See Diencephalon. B., Irri- 

 tation of, follows injur)', and is marked by 

 symptoms of irritability and often by con- 

 vulsive phenomena. B., Little, the cere- 

 bellum. B. -mantle, that portion of the 

 brain-substance including the convolutions, 

 corpus callosum, and fornix. B., Mid-. 

 See Mesencephalon. B.-pan, the cranium. 

 B., Railway, a neurosis sometimes occur- 

 ring in those who ride constantly on railway 

 trains. It is characterized by anesthesia, 

 or spinal hyperesthesia, insomnia, paresis, 

 etc. B. Sand, a gritty mineral matter 

 found in and about the pineal gland, con- 

 sisting mainly of calcium and magnesium 

 carbonates and phosphates. Its function is 

 not known. B. -shake. Synonym of £., 

 Concussion of. B.-stem, the pons, me- 

 dulla, and crura cerebri. B. -storm, a 

 succession of sudden and severe phenomena, 

 due to some cerebral disturbance. B.-tire, 

 a condition of brain-exhaustion due to ex- 

 cessive funcrional activity. See B.-fag. 

 B.-wave, the supposed telepathic vibra- 

 tion of a "mentiferous ether," by which 

 thoughts and impressions may be transferred 

 from one person to another. B.-wax. 

 See Cephalot. 



Brainard's Operations. See Operations, 

 Table of. 



Bramah's Apparatus. An apparatus by 

 which water may be charged with C0 2 by 

 the continuous method. 



Bramble (bram'-bl). See Rubus. 



Bran (iron) [ME., bran\. The epidermis 

 or outer covering of the seeds of most 

 cereals. It contains woody matter 35, starch 

 22, albumin and gluten 13, water 12, gum 

 8, other matters, including a small amount 

 of silica, 10 per cent. It contains, also, ^ 

 diastatic ferment that converts the starch 

 into dextrin. B. Bath. See Bath. 

 B. Tea, a decoction of bran, used in 

 coughs. 



Sylvius. 12. Olfactory nerve. 13. Third convolu- 

 tion of inferior surface of frontal lobe. 14. Fourth 

 convolution. 15. Third convolution of external 

 surface of frontal lobe. 16. External border of 

 posterior lobe. 17. Sphenoidal extremity. 18. Oc- 

 cipital extremity. 19. Hippocampal convolution. 

 20. External convolution of posterior lobe. 21. 

 Middle convolution. 22. Internal convolution. 23. 

 Gyrus fornicatus. 



