252 On a Substance to which the Name 



has Woni, until they have been disinfected. The only method U 

 the fumigation No. 4, for clothes, utensils, &,'c. 



For wards filled with patients, tlie fumigation No. 1, with 

 the modifications alluded to in No. 2. 



Fc5r empty wards which have been occupied by tvphiis pa- 

 tients, the fumigation No. 1 ; afterwards the walls and floors 

 ought to be scrajjed, white-washed with lime and water, the fur- 

 niture washed, &c. 



In the article of the precautions for preventing the origination 

 of typhus and arresting the contagion in its very outset, the in- 

 structions recommend the scrupulous employment, and several 

 times a-day, of the same methods used in disinfecting wards. And 

 finally, all the physicians, surgeons, nurses, &c. are to imdergo 

 fiimigations every time they quit the ward. This precaution 

 ought to be strictly attended to, in order to preserve them from 

 infection, and that they may not spread it when they leave the 

 hospital. 



LIII. On a Substance to tvhich the Name of Inuline has been 

 given. By M. Gualtier de Claubry*. 



JVll. Rose a few years since f made known a substance which 

 he extracted from the root of the elecampane {inula hdenium), 

 find which he regarded as a peculiar matter, which might hold 

 a middle place between starch and sugar. 



No person, so far as I know, has repeated the experiments of 

 M. Rose; but chemists have ventured various opinions as to the 

 nature of this substance. M. Funcke, in a note on the analysis 

 of the elecampane, speaks of the inuline^ but does not sav a 

 word as to its properties J. 



Dr. Thomson regards it as a particular matter, and classes it 

 among the number of the immediate materials of vegetables. He 

 proposed to give to it the name of inuline. M. Tromsdorf also, 

 regarding it as a peculiar substance, has called it alantine. 



Dr. Henry, considering it on the contrary as a substance of 

 doubtful existence, places it among those bodies the nature of 

 which is not well known. He designates it by the name of 

 elecampane. M. Thenard in his work on chemistry assigns the 

 same rank to it. 



Having had occasion to make some experiments on the sub- 

 slance discovered by M. Rose, I shall now detail them. 



The name of inuline, given by Dr. Thomson to the substance 



* Annates dc Chimie, tome xciv. p. 200. 

 t Gehlei.'s Journal, tome iii. p. Sil7. 

 X- Annates de Chimie, tome Ixxvi. p. 98. 



