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VI. ILxptrlments upon the liquid Sf/lphur of Lampadins* 

 By Messrs, VAuauELiN and KoBiauET *'. 



Process, 

 X-rfAMPADius, who was the first, to observe this particular 

 fluid, which he callcd*//(/7/?c? .udphnr, obtained it by the 

 disi illation of pyritous turfs, and pyrites mixed with a cer- 

 tain quantity of charcoal or saw-dust. Messrs. Clement and 

 Dcsormes employed the charcoal and sulphur in order to 

 form completely the liquid sulphur, which M. Lampadius 

 considered as a combination of sulphur and hydrogen ; but 

 these chemists announced the process as bfeing very difficult 

 in its execution, since they had only succeeded once out of 

 twenty times. Nevertheless, three successive experiments 

 have furnished us vi'ith results equally satisfactory, and we 

 have not remarked that they have any other essential pre- 

 cautions than that of cooling the flasks adapted to the ap- 

 paratus, in order to avoid the volatilization of 'this singular 

 substance. We therefore took, as Messrs. Clement and 

 Desormes directed, finely pulverized charcoal ; we employed 

 it in a very dry state, and introduced it into a porcelain 

 tube, to which was adapted, by one of its apertures, a small 

 retort containing sulphur; at the opposite extremity we 

 placed a large tube with a simple curvature, which was in- 

 serted into a flask three-fourths filled with water; care was 

 taken to make a hollow in that part of the tube which en- 

 tered into the water, in order that it might serve as a tube 

 of safety for the porcelain tube; this first flask, which ought 

 to have three tubulures, has a straight tube at one of them, 

 and at the third, a tube communicating with a second flask 

 surrounded by snow or pounded ice ; to this last \\q adapted 

 a tube, crooked so as to collect the gases. Things being 

 thus arranged, the porcelain tube is stropgly heated in a 

 reverberating furnace ; when it is red-hot the sulphur vo- 

 latilizes ; after a certain time, there passes into the first 

 flask a liquid of a citron yellow colour, having the appear- 

 aince of an oil, collecting into globules upon the surface of 



• Ann, ie Chimie torn. kl. p. 14^, 



