718 
ME. P. G-EIESS ON A NEW SEEIES OE BODIES IN 
This process must be repeated until the mass of crystals, which is invariably found 
deposited in the condensing-tube, is quite white, and fuses, on heating, to a limpid oil. 
This body gave on analysis the following results : — 
0-2003 grm. of substance gave 0-6138 grm. of carbonic acid and 0-1047 grm. of water. 
Calculated. 
Pound. 
^10 
120 
83-33 
83-57 
h 8 
8 
5-56 
5-81 
o 
16 
11-11 
— 
144 
100-00 
Naphtyl-alcohol crystallizes in small white shining plates, fusing at 91° C. to a colour- 
less, highly refractive oil which may be volatilized without decomposition. It is but 
slightly soluble in water, readily soluble in alcohol, ether, and benzol. When inflamed 
it burns with a thick smoky flame. Its formation and its physical properties prove its 
relationship with phenylic alcohol ; it possesses a similar burning taste, and a creosote- 
like odour somewhat resembling that of naphtaline. The relation between it and phe- 
nylic alcohol is likewise indicated by its chemical deportment. It stands on the same 
narrow boundary line between acid and alcohol ; and naphtyl-alcohol may, in like manner 
with phenol, be classified with alcohols or with acids. The strong bases form with the new 
alcohol (acid) a series of salts which are as unstable as those of phenylic acid, and are 
mostly decomposed even by the carbonic acid of the air. The potassium- or sodium-salt 
may also be obtained by the action of the respective metals upon the fused naphtylic 
acid with evolution of hydrogen. In both cases a crystalline saline mass is obtained 
which dissolves in water and alcohol. Basic acetate of lead produces in a solution of 
naphtyl-alcohol a white voluminous precipitate. An ammoniacal silver solution is 
decomposed, metallic silver being deposited. Nitric acid of sp. gr. T4 dissolves naphtyl- 
alcohol in the cold with evolution of red fumes. If the solution be boiled for some time 
and water added, a diflicultly-soluble yellow acid precipitates, whilst a second readily- 
soluble acid is deposited in yellow crystals on evaporating the mother-liquor. The latter 
appears to be the picric acid of the naphtyl group. By treating the aqueous solution of 
naphtyl-alcohol with bromine-water, it deposits bromonaphtylic acid in the form of an 
oil which speedily crystallizes. 
Many of the experiments described here and in the previous part of this investiga- 
tion, have been made in the laboratories of the Royal College of Chemistry, London, 
and the University of Marburg; and it gives me great pleasure to express my sincere 
thanks to Professors Hofmann and Kolbe for the kind manner in which the laborato- 
ries of these institutions have been placed at my disposal. 
