166 DR. LOWIG ON THE’ESSENTIAL OIL OF THE MEADOW-SWEET- 
Reckoned in equivalents : 
- 12 eqs. carbon......... 73°56 ...... 38°80 
5 — hydrogen ..,... 5°00... 2°62 
4. — OXYgeN ......... 32°00 «2... 17:10 
1 — bromine......... A AD sass an 41°48 
1 bromide of spiroil = 188°95 100-00 
Todide of Spiroil. 
Hydrospiroilic acid dissolves iodine in great quantities, and forms 
with it a brownish black fluid; the formation of hydriodic‘acid is how- 
ever not perceptible. Iodide of spiroil may be obtained by distilling 
chloride or bromide of spiroil with iodide of potassium; even by rubbing 
these substances together decomposition commences, and by the appli- 
‘eation of heat iodide of spiroil sublimes: it is solid, of a dark brown 
colour, easily fusible, and shows in general the same properties with 
regard to solubility in water, ether and alcohol, and its relations to 
saline bases, as chloride and bromide of spiroil. : 
