INDUSTRIAL PROGRESS DURING THE YEAR 1875. Ixxxv 



Freund has examined the asserted production of trimethyl- 

 carbinol in ordinary alcoholic fermentation, and has been en- 

 tirely unable to find a trace of it in the products of distilla- 

 tion. 



Berthelot has effected' a simple dissociation of aldehyde by 

 heating a mixture of five volumes of hydrogen and two vol- 

 umes of aldehyde vapor to a red heat for half an hour. The 

 products were carbonous oxide and methane. 



Meyer has succeeded in producing acrolein by the im- 

 perfect combustion of ethylene. When to 100 volumes of 

 ethylene gas 62 to 65 volumes of oxygen are added and 

 exploded in a eudiometer, carbonous oxide, hydrogen, and 

 condensed hydrocarbon gases are formed, and carbon is sep- 

 arated. At the same time the carbonous oxide unites to 

 the undecomposed ethylene present, and produces acrolein. 

 This w T as recognized by its well-known properties, and by 

 conversion into acrylic acid. 



Von Lang has measured the crystals of glycerin. They 

 are brilliant when in their mother-liquid, but deliquesce in 

 the air. In form they are orthorhombic, the ratio of the 

 axes a : b : c=l : 0.70 : 0.66. 



Von Zotta has examined more closely the production of 

 glyceric oxide by the action of calcium chloride on glycerin. 

 The product is an oily liquid of specific gravity 1.16, con- 

 verted into glycerin again on boiling its aqueous solution. 



Prevost has given a new and simple method of preparing 

 epichlorhydrin, which consists in warming dichlorhydrin in 

 a capacious retort attached to a receiver, and adding pulver- 

 ized sodium hydrate to it in the proportion of 250 grammes 

 to 550 cubic centimeters of dichlorhydrin, the temperature 

 being kept below 130. Almost pure epichlorhydrin distills 

 over. 



Clin has given a method for the preparation of crystallized 

 monobromcamphor being camphor in which an atom of 

 bromine has replaced one of hydrogen by the direct action, 

 at 100 C, of bromine upon camphor. The specimens shown 

 to the French Academy were magnificently crystallized. 



Bourneville finds that monobromcamphor (l) lessens the 

 number of beats of the heart, (2) lessens the number of in- 

 spirations, (3) lowers the temperature of the body, (4) pos- 

 sesses powerful sedative properties, and (5) produces ordi- 



