94- Intelligence and Miscellaneous Articles. 



it afterwards, as M. Rose had done, in a long weighed tube of glass, 

 the lower end of which was closed. He ascertained the quantity, and 

 immersed the tube in hot water. There was but little moisture dis- 

 engaged, and it was very probably hygrometric, and the residue, which 

 was converted into common phosphorus, was weighed, and found 

 scarcely diminished. 



In order to verify the assertions of M. Mulder, the author put 

 white sticks of phosphorus into aerated water ; he left them in it for 

 several weeks without perceiving any alteration of colour ; he then 

 directed upon them a current of oxygen gas, without producing any 

 sensible effect. He obtained, as M.Mulder did, the compound of 

 oxide of phosphorus and phosphuretted hydrogen, and found that it 

 strongly resembled the white crust ; but the manner in which it was 

 acted upon by heat, he found to be very different. 



M. Marchand concludes, therefore, from his experiments, that the 

 supposed white crust is merely, as was first supposed by M. Rose, 

 phosphorus in an altered state of aggregation. — Journal de Pharmacie, 

 torn. xxvi. p. 764. 



NITRO-SACCHARIC ACID. 



M. Boussingault states that this acid is obtained by dissolving 

 sugar of gelatin in weak nitric acid. It is to be slightly heated, and 

 on cooling the solution crystallizes ; no other reaction takes place 

 besides the mere dissolving of the sugar in the acid. This acid has 

 a very sour taste, and also a slightly saccharine one. M. Boussin- 

 gault analysed it in three different states : crystallized, dried, and 

 as it exists in salts. 



Dried at 230° Fahr., this acid contains, 



By experiment. By calculation. 



Hydrogen 4-2 4*0 H 42 



Carbon 18*1 18'2 C'« 



Oxygen 56'5 56'3 O" 



Azote 21-2 21-5 N 16 



100- 100- 



Nitro- saccharic of silver crystallizes very readily ; this salt burns 

 without detonating. Its composition is, 



Hydrogen 1*86 



Carbon 10-08 



Oxygen 27'63 



Azote 11-83 



Silver 48-60 100-00. 



It is stated by the author that nitro-saccharic acid dried at 210° 

 Fahr. loses four equivalents of water, which are replaced in the 

 nitro-saccharate of silver by four equivalents of oxide of silver, and 

 the analysis of the nitro-saccharate of potash leads to the same con- 

 clusion ; it was also observed by M. Boussingault, that it will ap- 

 pear on slight examination that the nitric acid remains unmodified. 



The nitro-saccharate may be represented as resulting from the 

 union of nitric acid with the corresponding saccharate, or as a com- 



