INTESTINAL CONCRETIONS. 585 



died from intestinal concretions composed of ammonia-phosphate 

 of magnesia. 



The calculus analyzed by Girardin was triangular with its 

 edges and surface smoothed ; showing that it had existed along 

 with other calculi in the intestines. It was of the size of a large 

 apple. It weighed 311 grammes. Its texture was crystalline, 

 its colour brown, and its specific gravity 1*741. Its constituents 

 were, 



Water, . . . 14O 



Ammonia-phosphate of magnesia, . 48 '0 



Phosphate of lime, . . . 19-0 



Animal matter, insoluble in acid and water, . 0-8 

 Matters soluble in water,* . . 6*6 



Extractive soluble in alcohol, f . . 4*0 



Fatty matter, . :. . .7-0 



99-4 



M. Schwerkert, apothecary in Dingelstadt, has also given an 

 account of an ammonia-phosphate of magnesia calculus found 

 after death in the caecum of a horse.:f 



There are four calculi in the Hunterian collection in Glas- 

 gow composed of lithofellic acid. They are oval-shaped, and 

 composed of concentric layers. The largest is about two inches 

 in length and one inch in thickness, and weighs about 320 grains. 

 One of these calculi has for a nucleus a date-stone ; the nucleus 

 of another is a vegetable substance resembling matted hair. 

 Hence they would seem to be intestinal concretions of some in- 

 ferior animal, probably bezoars. 



DIVISION III. 



OF THE FUNCTIONS OF ANIMALS. 



THE object of the preceding part of this work has been to ex- 

 hibit a view of the different substances which enter into the com- 

 position of animals, as far as the present limited state of our 



* Albuminate of soda, common salt, alkaline sulphates, salts of lime and 

 magnesia. 



f With common salt, salts of magnesia, and fatty matter. 

 \ Ann. der Pharm. xxxvii. 200. 



