Mr. T. Taylor on Biliary and Intestinal Concretions. 355 



Catalogue of the Calculi and other Concretions, which will 

 shortly be published, the following facts will be shown : — 



1. That the lithofellinic acid calculus, described by Profes- 

 sors Goebel and Wohler, Ann. derPharm. for 1841, b. xxxix., 

 and Gotting. Geleltr. Anz. for the same year, is not a new 

 species of calculus, but is identical in composition with the 

 calculus described and figured by Fourcroy and Vauquelin 

 in the first volume of the Ann. der Museum National as " re- 

 sine animate bezoardique." Also that it is not a biliary calcu- 

 lus, or in any way connected with the biliary secretion, as its 

 name would imply, but that it is derived from the resinous 

 juices contained in the plants, &c. on which the species of wild 

 goat, termed by the Persians Pasen, browses. This view of 

 the origin of these bodies is advocated by Kaempfer in his 

 Amcenitates Exotica, and its correctness will be proved on 

 chemical and other grounds. 



2. That several intestinal concretions have been discovered 

 consisting of the insoluble acid obtained by Braconnot from 

 the infusion of gall-nuts, and termed by him ellagic acid. The 

 constituent of these concretions has been described by John, 

 Chem. Sehr. 3. 38, under the name of Bezoarstoffl It forms 

 also the ligniform matter of Berthollet, " Holzartige Materie-" 

 and I have also no doubt that it is the ■peculiar acid from 

 the oriential bezoar, described by M. Lippowitz in Simons's 

 Beitr'dge zur phys. et pathol. Chemie, b. i. p. 463, and termed 

 by him bezoaric acid. 



Oxalate of Lime. — In the first part of the Catalogue, pub- 

 lished in 1842, p. 75, I alluded to the fact of large concretions 

 of this salt being occasionally found in the intestines of herbi- 

 vorous animals ; these have since been described as a new spe- 

 cies by M. Guibourt, in the Joum. de Pharm. et de Chimie 

 for February 1843. 



Biliary Calculi. — In addition to the stearate of lime calcu- 

 lus, already described in the Phil. Mag.*, I have to announce 

 the existence of another species, which resembles in most of 

 its chemical habitudes the colouring matter of the bile (Chole- 

 pyrrJiine, Berz.), but which is not converted into Gallengrun 

 by solution in potash and precipitation by muriatic acid. 



Urate of Potash. — Two of these calculi, the discovery of 

 which was alluded to in the preface to the first part of the Ca- 

 talogue, have been submitted to a quantitative analysis. One 

 contained above 10 and the other above 13 per cent, of potash 

 in combination with uric acid. 



Intestinal Concretions consisting of Vegetable Hairs. — Dr. 

 Wollaston first showed that the greater number of the human 

 * S. 3. vol. xvii. p. 8. 

 2 A 2 



