VARIOUS CONCRETIONS. 475 



A concretion from the eye of a blind man contained, ac- 

 cording to Wurzer, 47*9 parts of phosphate of lime, 9*5 of the 

 carbonates of lime and magnesia, 20'3 of mucus, 0'9 of peroxide 

 of iron, and 11 '9 of clear fat resembling butter. A nasal concre- 

 tion occurring in a woman aged 57 years was found by Brandes 1 

 to consist of 79*6 of phosphate of lime, 6-4 of carbonate of lime, 

 and 14 of chloride of sodium, animal matter, and water. It 

 consisted of five portions, weighing altogether 210 grains. It 

 varied externally from a grayish white to a yellowish green 

 colour, and its internal surface was gray and finely granular. 



A nasal concretion analysed by Regnard consisted princi- 

 pally of carbonate of lime, with a little phosphate of lime and 

 animal matter. A specimen analysed by Geiger consisted 

 almost entirely of earthy phosphates and carbonates, while an- 

 other examined by Herberger, yielded 46 of dried nasal 

 mucus. A calculus of this nature weighing 81 grains, ana- 

 lysed by Homer, contained 90 parts of phosphate of lime, 5 of 

 carbonate of lime, and 5 of animal matter with traces of car- 

 bonate of soda. 2 



Concretions formed in the lungs consist also principally of 

 the earthy phosphates and carbonates. A pulmonary concre- 

 tion analysed by Sgarzi, contained carbonate and phosphate of 

 lime, carbonate of magnesia, cholesterin, fat, mucus, albumen, 

 peroxide of iron, and silica. A concretion of this nature, that 

 had been expectorated, was analysed by Brandes ; it contained 

 the above mentioned salts, cemented with mucus and albumen. 



On examining the lungs of the boy with the osteoid tumour, 

 noticed in p. 412, there was found in them an oval, solid en- 

 cysted concretion, of the size of a hazel nut. Being anxious 

 to ascertain whether it was allied to the osteoid tumour in its 

 composition, I analysed it and found in 100 parts : 



Archiv der Pharmacie, vol. 11, p. 157. 



[Much additional matter on the chemistry of nasal concretions may be found in 



a paper by Demarquay, in the ' Archives gen. de Medecine,' Juin 1845,] 



