Physics and Chemistry. 117 
fore, that Schlippe’s statements are entirely erroneous. The vola- 
tile fluid acids are essentially acetic, butyric and valeric, mixed 
perhaps with traces of oenanthia acid and higher members of the 
crystallizing in pearly ooae, and amen es composition 
€.H,Ba’8,+5H,8. Ithasa ” remarkably close correspondence 
he met : 
uppa. It is therefore obvious that the name “crotonic” given 
to the acid €,H,98,, is a misnomer, since croton oil contains no 
acid of this composition. Geuther therefore proposes to call the 
chlor- acid of Froelich, mentioned above, which fuses at 59°5° and 
and till now called crotonic acid, the name tetracrylic acid. Its 
aldehyd called crocs se by Kekulé, would ee = 
ti. On the Hh d.—Zeitschr. Chem., Il, vi, 26, Dec. 1869. 
17 
‘ henish ae from beech-wood tar.—Un aa the 
direction of Baeyer and Graebe in Berlin, Marassz has made 
investigation of beech-wood creosote, with ‘results pase more anti 
tory and conclusive than had been previously obtain e ma- 
terial on which he worked came from the manufacto sor Dietze & 
Company in Mayence; it was colorless, a little thick, heavier than 
obtamed, which boiled between 183° and 184°, solidified on Bob 
ing, and ‘had the properties of phenol, which an "nal ysis proved it 
ne be. On distilling the ecoond: and largest f fraction with zinc-dust 
p and fractio the disti two products were 
obtained: the one, boiling between 110° sat ‘112° , proved on anal- 
ysis to be toluol,©,H,, or, €,H, | 7s Since the zinc-dust acts 
by reducing hydroxyl to hydrogen, the body yielding this toluol 
must have been €,H, | a or cresol. The other portion boiling 
at 150° to 155° afforded the properties and composition of anisol. 
As this anisol €,H, wa €H, does not exist in the creosote as such, 
it must have been produced by a similar action of the zinc-dust, 
H 
from the body €,H, OCH, which is guaiacol, the acid methyl 
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