Chemistry and Physics. 511 
this is converted into barium amyl-sulphate, the kind of salt ob- 
tained is determined by (A) the quantity of sulphuric acid added, 
ixture. ( i 
an oily liquid. This, when washed with water and neutralized, 
gives salts which in their rotatory power are different from those 
obtained from the amyl-sulphuric acid which the water has dis- 
solved. In this way, not only a levo-, but also a dextro-active 
ory pha 
_ under otherwise equal conditions it is in the alcohol prepared 
. pr. Ch,, I, viii, 272. G. F. B. 
new Synthesis of Alcohols.—W aGNer and SayTzEFF have 
hol i i 
4.2. 5 
diethyl carbinol C oe 5. They are at present engaged in study- 
OH 
ing this product and also the products obtained by employing the 
lodides of the other alcohol radicals, They are investigating, in 
addition, the action of the organic zinc compounds on the ethers 
h potassium dichromate, it at first turned brown, and then 
solidifled to a mass of violet crystals, having all the properties of 
Coerulignone. An analysis of the crystals gave for them the for- 
mula C, eH 4D, Further researches upon it are in progress.— 
Ber. Berl. Chem. Ges., vii, 78, Jan., 1874. G. ¥F. B, 
9. Elongations due to Electricity—Mr. H. Street con- 
ducted a series of experiments on the change of length of bars of 
in length is measured by levers and mirrors, in which the reflec- 
tion of a graduated scale is viewed with a telescope. To elimin- 
ate the effect due to the increase of temperature produced by the 
