Intelligence and Miscellafieotis Articles. l-iV 



ROSACIC ACID IN HUMAN UFiINE. 



M. Henry, Jun., during an attack of acute rheumatism, accom- 

 panied with nervous fever, observed that his urine became of a red 

 colour, and on cooling, that it deposited a very abundant orange pre- 

 cipitate. On examination he found that it contained much rosacic 

 acid, phosphoric acid, and phosphate of lime, but that the uric acid 

 had disappeared and been replaced by the rosacic acid. — Journal de 

 Pharmac. xv. p. 228. 



SILICATE OF IRON FROM BODENMAIS. 



Professor Kobell of Munich reduced this ore to fine powder, and 

 acted upon it with muriatic acid, and it yielded nearly 



Silica 31-28 



Peroxide of iron 5086 



Water 19.12 



101-26 

 It is therefore to be considered as an hydrated silicate of iron.- 

 Annales de Chim. et de Fhys. April 1829. 



CALCAREOUS CRYSTALS IN THE TISSUES OF LIVING VEGE- 

 TABLES. 



M. Raspail, in a late memoir, shows that the crystals of the pan- 

 dani, orchides, scillae, &c., in short, all those which are about -rVth 

 of a millimetre in length, and T-J-irth in breadth, are hexahedral 

 crystals of phosphate of lime ; and that the crystals of the tubercles 

 of the iris, which are ^rd of a millimetre in length, and ^th in 

 breadth, are rectangular crystals of oxalate of lime. It was by means 

 of a magnifying power of from 1000 to 2000 diameters that these 

 new researches were established. These crystals, it will be re- 

 membered, were taken for microscopic hairs ; and very recently an 

 author imagined he saw them perforated in the middle of their 

 length, and figured them as such. — JamesorCs Journal, July 1829. 



CHLORIDE AND IODIDE OF AMMONrA. 

 M. Scrullas has announced to the French Academy, that the 

 substances usually termed chloride and iodide of azote contain 

 hydrogen ; or in other words, that they arc chloride and iodide of 

 ammonia. — He has promised a memoir on the subject. — Lc Globe, 

 April 11th & 18th. 



DECOMPOSITION OF AMMONIA IJY MKTALS. 

 M. Dcspretz, who first announced that nietaLs when sul)jected 

 to heat and amnioniacal gas, underwent a consideral)le chango of 

 density, lias also discovered tiiat tlic weight of iron is souietinus 

 increased as much as 11 ^ per cent, owing to its combining witii 

 azote ; but if the heat be too great, then the azote is again expcllcJ. 

 —Ibid. April 11. 



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