376 Scientific Intelligence. 
this substance in a most ¢ nsfally fractionated product such as was 
used in caesar the hile 3 en it had a boiling point lower 
by 25°, led to the supposition that the trimethyl-carbinol was pro- 
duced from the isobutyl alcohol itself, by the action of the hydro- 
chloric acid. Pure isobutyl alcohol was taken and heated as above 
periments showed that the quantity produced depends on the 
relative amount of hydrochloric acid; and that ig hein and 
hydriodic acids act similarly. The reaction is as follow 
H OH BSE 
| | 
CH,- C= CH > +HI=—CH 0-08, +H O 
CH, CH, 
uthor recommends this reaction for the prepar ation of 
ee a Isobutyl eee is saturated with HCl, five 
parts fuming acid are added, and the whole is heated in a water- 
bath for 24 Loan 7 be: Ch., tL xii, 25, July, 1875. G. F. 
the Preparation of Epichlorhi drin.— PREVOST recom 
mends, instead of treating dichlorhydrin by potassium or 80 
hydrate in the cold, as in the usual method for the preparation of 
receiver ata to warn the dichlorhydrin in a roomy retort with 
gr 
At the given aipanatans the epichlorhydrin 
istills over with the vapor 0 of water. The process 1s more raph 
« OR; 
3. ‘On 7 ew: Pinacoline: - The name pinacolin sek ve ny 
Fittig to a body obtained by dehydrating pinacone, and axuem 
by Butlerow to a class of acetones which contained tertiary-aleohel 
SKY, under this chemist’s direction, has prepared three new bodies 
pelonging to this class, two of which are agape and contain 
seven atoms of carbon. white the third contains eight. It nie 
molecule ‘of goodie. chloride be added outa to two 0 
a spe- 
cific gravity of 0°831 at 0°. Analysis are it to be ethyl-bu as 
H,) 
The other bodies were obtained fy he et sthyl-dimethyl 
acetyl chloride upon zinc-methyl and zinc-ethy] respectively. a 
first is methy Lamylpinacolin, C(C,H,)(CH,),---CO---CBs» 
isomeric or rather metameric with ethyl-butyl-pinacolin, and hav 
ing a boiling point 65° higher. The second is ethyl-amyl-pinac®” 
