OF BONES AND TEETH, fcc. ^7 



BRAIN and NERVES. The hemispheres of the human brain : a reddish-brown liquid fat, 

 leaving phosphoric acid by combination, 0.7 ; a white fat becoming blacker by fusion, and 

 giving rise to much phosphoric acid by combustion, 4.53 ; phosphorus contained in these 

 fatty substances, 1.5 ; osmazome, 1.12 ; albumen, 7.0 ; phosphate of potash, muriate of 

 soda, phosphate of lime and phosphate of magnesia, 5.15 ; water, 80. 



The human cerebellum gave the same results. 



Medulla oblongata and spinal cord have the same constituent principles, but they con- 

 tain more of the fatty matter, and less albumen, osmazome, and water. 



The nerves of the human subject contain less of the liquid and chrystallizable kinds of 

 fatty matter, but more of the fatty substances which resembles adipocire, and much more 

 albumen than the brain. (Vauquelin, Ann de Chim. Ixxxi. 37.) 



The grey substance of the brain of a calf : albumen insoHible in water, 10.0 ; an unctu- 

 ous incrystallizable fat, osmazome, phosphate of ammonia, phosphate of soda, phosphate 

 of lime, phosphate of magnesia, hydrochlorate of soda and traces of iron, 15.0 to 10.0 ; wa- 

 ter 75 to 80. 



The white substance of the brain of a calf contained more fatty matter than the grey ; it 

 presented traces of silicia. The cerebellum of the calf gave the same products as the cineri- 

 tious substance. 



The optic thalami, the medulla oblongata, spinal marrow, and the nerves of the calf, 

 gave results similar to those furnished by the white substance of the brain, excepting that 

 they contained more albumen and less water. 



* The brain of a bullock contained also phosphate of ammonia, a more solid albumen, a 

 reddish coloured fat, and a chrystallizable fat. The composition of the brain of the stag 

 was similar. (John Ecrits Chim. iv. 249. v. 162.) 



The lymph found in the ventricles of the human brain: gelatine (osmazome ?) 0.9 ; mu- 

 cus (salivary matter ?) 0.3 ; albumen, 0.6 ; hydrochlorate of soda and a little of the phos- 

 phate of soda, 1.5 ; water, 96.5 ; loss, 0.2. (Haldat, Ann. de Chim. ex. 176.) . 



A soft concretion found incysted in the cerebral pulp of a subject who was afflicted with 

 mental alienation : white grease^6 ; semiconcrete albumen, 17.0 ; cartilaginous substance, 

 insoluble in potash, 18.0 ; salts with ammonia, potash, soda, and lime for their base, about 

 2.0 ; water, 57. (John Scrits Chim. v. 102.) 



See the note at p. 207 and 208, for the composition of the * humours and textures of the 

 eye.' The pigmentum nigrum is mixed with mucus. 



Mucus. The nasal mucus of the human subject contains : mucus, 5.33 ; albumen, and 

 salivary matter with a trace of phosphate of soda, 0.35 ; osmazome, with lactate of soda, 

 0.3 ; soda, 0.09 ; hydrochlorate of potash and of soda, 0.56 ; water, 93.37. (Berzelius, 

 Fourcroy and Vauquelin.) The mucus of the trachea, according to Berzelius, is similar 

 in its consumption. 



SALIVA. Has a strong affinity for oxygen, absorbs it readily from the air, and gives it 

 out again to other bodies. The human saliva consists of salivary matter, 0.29 ; mucus, 

 0.14 ; osmazome with lactate of soda, 0.08 ; soda, 0.02 ; hydrochlorate of potash, and hy- 

 drochlorate of soda, 17 ; water, 99.29. (Berzelius, Bostock, Thomson, John.) 



Salivary calculi are formed of a membranous substance, containing phosphate of lime. 



The tartar of the teeth. Mucus, 1.25 ; salivary matter, 1.0 ; animal matter, soluble in 

 hydrochlorate acid, 7.5 ; phosphate of lime, and phosphate of magnesia, 7.90. (Berzelius.) 



The LACHRYMAL. FLUID. Animal matter, soda hydrochlorate and phosphate of soda, 

 and phosphate of lime, 1.0 ; water, 99.0. The calculi of the lachrymal gland are formed, 

 of the phosphate of lime. ( Vau f >u 



The GASTRIC JUICE. The gastric juice ejected by vomiting after fasting for some time 

 resembled, according to Montegre, in appearance, the saliva ; it contained flocculi of mu- 

 cus, and underwent putrefaction as rapidly as the saliva ; but sometimes it was acid, and 

 then it did not undergo putrefaction. 



LYMPH : the liquor found in the thoracic duct of animals which have not taken nourish- 

 ment for 24 hours, is as limpid as water, does not affect the vegetable colours, does not co- 

 agulate either by heat or by acids ; it becomes slightly turbid from alcohol, leaves a very 

 small residuum when submitted to evaporation, and consequently appears to contain but* 

 very little matter, and only a small quantity of the hydrochlorate of soda. 



The lymph of a horse taken from the thoracic duct towards the inguinal region and me- 

 ^ocolon, was of a greenish yellow, translucid, and concreted in 12 minutes into a clear ge- 

 latine ; the coagulum, which hardly amounted to pj-g-, was similar to fibrine, the fluid con- 

 tained about 0.04 of albumen, muriate of soda, with a little soda and phosphate of soda. 

 (Reuss andEmmert, Journ. de Scherer, v. 681.) 



CHYLE. The chyle taken from the thoracic duct of a dog, three hours after a vegetable 



diet, resembled clear milk, and deposited a reddish-white coagulum : this coagulum, which 



had the appearance of fibrine, was to the serum at first in the proportion of 48 to 100 ; but 



^eing left longer to itself it increased considerably. The specific weight of the serum 



