OF BONKS AND TEETH, &c. 



According to Vauquelin semen is composed of water, 90; mucilage, 6; phosphate of lime, 



3; soda, l.= 100. 



The OVA. from the ovaria of the human subject : gelatine, albumen, phosphate, with an 



alkaline base in excess. (John's Chemical Writings, vi. 158.) 



AMNJOTIC FLUID, which surrounds the foetus, in the human species is of a slightly milky 

 lour, owing to a curdy matter suspended in it, of a weak pleasant odour, and saltish 

 <te; specific gravity 1.005; is composed of about water, 98.8; albumen, muriate of soda, 



colour 

 tast 



<oda, phosphate of lime, lime, 1.2 = 100.0. (Vauquelin and Buniva, Jinn, de Chim. 

 xxxiii. 270. 274.) A curdy-like matter is deposited on the surface of the foetus, evidently 

 from the liquor of the amnios. Vauquelin and Buniva have shown that it is different from 

 any thing contained in this fluid ; that it has in its chemical relations a great resemblance 

 to fat. They conjecture that it is formed from the albumen of this liquid, which has un- 

 dergone some unknown changes. It appears to be of service in preserving the skin of 

 the foetus from being acted of by the liquor of the amnios, and to facilitate its passage hi 

 parturition. 



Pus. Its taste is insipid, and it has no smell when cold. Before the microscope it exhi- 

 bits the appearance of white globules swimming in a transparent fluid, specific gravity 

 from 1.031 to 1.033. When incinerated, the ashes give traces of iron. (Gren's Hand- 

 buck, ii. 426.) It produces no change on vegetable blues. Alcohol thickens pus, but does 

 not dissolve it ; nor does it unite with oils. Soluble in sulphuric acid, but separated on the 

 addition of water. The same is the case with nitric acid. Muriatic acid also dissolves it 

 when heated, and it is again separated by water. 



The fixed alkaline leys form with it a whitish ropy fluid, which is decomposed by water, 

 the pus being precipitated. Corrosive sublimate, nitrate of mercury, and nitrate of silver, 

 give a whitish precipitate from its solution, indicating an analogy with albumen. 



Expectorated matter yields traces of sulphur, and perhaps also of phosphorus; and it con- 

 tains the following saline substances: 1st, Muriate of soda, varying from H to 2^ in the 

 1000 of expectorated matter 2d, Phosphate of lime, half a part in the 1000. 3d, Ammo- 

 nia united probably to phosphoric acid. 4th, A phosphate probably of magnesia. 5th, Car- 

 bonate of lime. 6th, A sulphate. 7th, Vitrifiable matter, probably silica. 8th, Oxide of 

 iron. The whole of these last six substances scarcely amount to one part in the 1000 of 

 expectorated matter. 



The proportion of saline matter of albumen present in expectorated matter varies much, 

 in different circumstances. The thicker it is, in general the smaller is the quantity of the 

 aHne matter: whereas, when very thin, it is often impregnated with salts, especially with 

 the muriate of soda to a great degree, and tastes distinctly salt and hot. 



Liquor of the pericardium. Dr. Bostock (Nicholson's Journ. xiv. 147.) considers it to 

 be composed of water, 92.0; albumen, 5.5; mucus, 2.0; muriate of soda, 0.5 100.0. 



Liquor of dropsy. Dr. Bostock found the liquid formed in " spina bifida" to be com- 

 posed as follows: water, 97.8; muriate of soda, 1.0; albumen, 0.5; mucus, 0.5. gelatin, 

 2; lime, a trace. (Nichol. Journ. xiv. 145.) 



The same kind of fluid obtained from the head of a child of ten years was examined by 

 Dr. Prout. It faintly reddened litmus paper. Its constituents were as follow: water, 987. 

 18; albumen, precipitated by nitric acid and heat, 1.66; substances soluble in alcohol (fatty 

 adipocirous matter, lactate of soda,) 1.65; substances soluble in water 9.51. viz. muriates 

 of potash and soda, 6.80; sulphate of soda and some animal matter not coagulated by 

 heat, 2.71 1000.00. (Ann. of Phil. xvi. 151.) 



Liquor of blisters. The analysis of Macqueron (Ann. de Chim. xiv. 225.) gives it nearly 

 the same constituents as the serum of the blood : from 200 parts he obtained albumen, 

 36 -, muriate of soda, 4; carbonate of soda, 2; phosphate of lime, 2; water, 156 200. 



HUMAN FJECES. Their colour seems to depend upon the bile mixed with the food in the 

 digestive canal; when too light it is supposed to denote a deficiency of bile; when too dark, 

 there is supposed to be a redundancy of that secretion. The following table shows the an- 

 alysis of BERZELIUS. (Gehlin's Journ. vi. 536.) 



Water 73.3' 



Vegetable and animal remains - - 7.0 



Bile 0.9 



Albumen 0.9 



Peculiar and extractive matter sup- ^ 



posed to be formed from picro-> 2.7 

 mel. \ 



Salts* 2.3 



Slimy matter, consisting of picromel, 



peculiar animal matter, and inso- J 14.0 

 luble residue. 



100.0 



* The SALTS, their relative proportions. 

 Carbonate of soda - - - - 35 

 Muriate of soda .... 4 

 Sulphate of soda - 2 



Amm. phosphate of magnesia, - 2 



Phosphate of lime. . - - 4 





