Intelligence and Miscellaneous Articles. 163 



passing through a series of intermediate compounds containing sili- 

 cium, chlorine and sulphur. 



2. The first of these intermediate compounds, the body SiSCl 2 , is 

 readily isolated on account of its great stability. 



3. The sulphuret of silicium may likewise be obtained perfectly 

 pure. 



4. The existence of the compound SiS 2 CI is rendered highly 

 probable from certain reactions which take place between alcohol 

 or wood-spirit and the intermediate chlorosulphuretted products. 



In concluding this short notice, it may perhaps not be uninteresting 

 to arrange in a comparative table the expressions representing these 

 different compounds, according to each of the three views of the 

 molecular constitution of the chloride of silicium : 



Si = 266-82. Si = 1 77*88. Si = 88-94. 



Chloride of silicium SiCl 3 SiCI 2 SiCl 



Chlorosulphuret SiSCl 2 Si* S 2 CI 4 Si 3 SCl* 



Chlorobisulphuret SiS 2 Cl ? Si 3 S* CP ? Si 3 S 2 CI? 



Sulphuret SiS 3 SiS 2 SiS 



If regularity and simplicity deserve to be taken into consideration, 

 the preference will undoubtedly be given to the first series with 

 Si = 266-82.-— Comptes Rendus, May 15, 1848. 



ON THE CONSTITUTION OF THE PHOSPHATES OF THE ORGANIC 

 ALKALIES. BY DR. THOMAS ANDERSON. 



The author had been led to investigate the phosphates of the 

 organic alkalies, with the view of determining the accuracy of an 

 analysis of the phosphate of strychnia by Kegnault, which gave 

 results incomparable with the known constitution of the organic 

 phosphates. He alluded to the investigation of the phosphates of 

 aniline by Nicholson, and proceeded to the statement of his own 

 observations. 



Phosphate of Strychnia, with one equivalent of strychnia, was ob- 

 tained in long truncated needles, by digesting strychnia in tribasic 

 phosphoric acid. It dissolved readily in water, and was acid to test- 

 paper. By analysis it gave results corresponding to the formula 

 (C44 hm N 2 O* HO)2HO PO\ 



The crystallized salt was found to contain four equivalents of water 

 of crystallization. 



Phosphate of Strychnia, with two equivalents of strychnia. — Bylong- 

 continued digestion of strychnia with the foregoing water in solu- 

 tion, an additional atom of the alkaloid is dissolved, and the solution 

 on cooling deposits rectangular tables of a salt which is neutral to 

 test-paper. It is less soluble in water than the acid phosphate, and 

 its constitution was found to be represented by the formula 2(C 44 H-' 3 

 N 2 CHHO)HOPO\ 



Phosphate of Brucia, with two equivalents ofbrucia, is obtained by 

 the solution of brucia in phosphoric acid, and crystallizes from the 

 concentrated solution in short prisms. The crystals are neutral to 

 test-paper, and contain a large quantity of water of crystallization, 

 which they lose by efflorescence. The formula of the salt is 2(C 44 



M 2 



