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Hexyl-hydride, wherein six atoms of hydrogen have been replaced 
by six atoms of peroxide of hydrogen. 
From the recognised connection subsisting between mannite and 
the sugars, we may expect that the sugars also belong to the Hexyl- 
hydride series. 
Furthermore, just as glycerine has been got from the Propyl 
series, so may we hope to get mannite from the Hexyl series. It 
is our intention to attack this problem. We propose to make 
C 6 HgBr 6 , and to endeavour by some means to effect a replacement 
of the Bromine by peroxide of hydrogen. 
We subjoin a slight sketch of a few hexylic compounds. Iodide 
of hexyl C 6 H l3 I. (obtained from mannite), is a colourless liquid, 
having a smell very like that of iodide of amyl. It is very slowly 
acted upon by light; sp. gr. = 1*439 at 0° C. Boiling-point 
about 165° C. It can be distilled without suffering decomposition. 
Hexyl-alcohol C 6 H 13 HO may be obtained by decomposing the 
iodide of hexyl by means of oxide of silver and water. Its smell 
does not bear the slightest resemblance to that of amyl-alcohol. 
Hexylene C 6 H 12 is obtained by digesting iodide of hexyl with 
alcoholic solution of caustic potash. It is a light oil, smelling like 
amylene ; boiling-point about 69° C. Its vapour-density has been 
found to be 2*88 and 2 97. The formula C 6 H 12 requires 2*9022. 
It combines with great violence with bromine, yielding 
C 6 H 12 Br. 2 . 
Hexyl-hydride, C 6 H 14 , may be obtained by decomposing the 
iodide with zinc in presence of alcohol. It is a light oil, having a 
very fragrant smell, and not attacked by Bromine at any rate in 
diffused daylight. In these two particulars it differs widely from 
hexylene, which has an abominable smell, and which hisses when 
Bromine is dropped into it. In boiling point there is very little 
difference between hexylene and hexyl-hydride. 
All of these compounds have given satisfactory analyses. 
[We intend to publish a full account of the Hexyl-compounds.] 
The following Gentleman was admitted an Ordinary Fellow. 
Nicholas Alex. Dalzell, Esq., A.M., Conservator of Forests, and 
Superintendent of the Botanical Garden, Bombay. 
