164 DR. LOWIG ON THE ESSENTIAL OIL 
slightest alkaline reaction is visible. All these experiments séem to con- 
firm the above-mentioned view, that chloride of spiroil combines with-, 
out decomposition with the bases of salts. 
The question may here be asked, whether the acid properties of the: 
chloride of spiroil arise from chlorine, and whether such a chloracid (in 
the same way as oxyacids) could combine with them? 
. Till now no such combinations were known, and therefore perhaps ‘it 
might be simpler to state that when chloride of spiroil is brought toge-. 
ther with a metallic oxide, 4 eqs.of ametallicchlorideand 1 of a spiroilate 
are formed. If an acid be added to the solution of these salts, chloride 
of spiroil, is again thrown down and a corresponding metallic salt form- 
ed. In the same manner one may imagine double combinations, con- 
sisting of a metallic chloride and a salt of a bromacid, from which on. 
the addition of another acid chloride of bromine might be apEnnionts 
-. 0°327 grm. of fused chloride of spiroil yielded 
i 0°593grm. carbonic acid = 162-94 carbon. 
0-099 water = 10°98 hydrogen. 
0°327 grm. chloride of spiroil dissolved in potash entirely free Som 
chlorine, the solution evaporated, and the dry residue heated inaplatinum 
crucible yielded, after the mass which had been heated was dissolved in 
" water and: saturated with nitric acid, 0°306 fused chloride of silver = 
- 754 chlorine. 
Carbon T6240, ccssvieae zig OBS 
Hydrogen LOS oasis scnvsnels 3°35 
Oxygen PEOS. §, wenarcnehube 23°77 
Chlorine (Oe) eee sy 23°05 
327-00 100°00 | 
1 eq. of chloride of spiroil therefore consists of 
PD CGNs CANON 2c aoxsersavvuce svekcense. Vo emaad wien 50°38 
5 — hydrogen’ 20. ccc ecees tess let ecees 5°00... +0000. 3°42 
At —OKY LOW covecsene sessaneraiencnysd S2OOraaxeg oy hepee 
Di CRONE vin fos dekw ge ababyesbsehitean A Me atemetinns 26°84: 
14603 10000 
It has been stated that 0-628 grm. hydrospiroilic acid contained 0-795 
chloride of spiroil. According to the established eq. 111-56 ny deo 
spiroil should yield 146°03 chloride of spiroil : 
11°56 : 146°03 = 0°628 : 0°790. 
Bromide of Spiroil. - 
- Bromide of spiroil is easiest obtained by pouring bromine upon hydro- 
spiroilic acid ina deep glass: hydrobromic acid is immediately evolved, 
the mixture becomes perceptibly warm, and at last solidifies into a 
greyish white crystalline mass. Bromide of spiroil may also be easily 
