containing benzoic acid, as the copper ue formed nee heating noo ie 
chlorine. In his view, however, that the same holds good for substances contai 
100° grams. of oil, Eadaaied in a Paden flask. the limonene is Siow as 
20 drops per minute) distilled off at from 2 to oS mm. pressure. 
distils more quickly, some less volatile constituents nearly always pass over, 
_ the esters. The distillate always reacts slightly acid towards phenalphe ut 
Ztg. 80 (1915), 142; Report October 1915, 56. — a We have painted: out a oad in our 
chemistry in order to test for chlorine compounds. These are the Bellste a 
os the combustion tests. We should not go une this well- known matter 
We have remarked on previous occasions *) that, ameneyer minimal quanetes Gh c 
are concerned, Beilstein's test is inferior to either the lime and the combustion 
> 
is somewhat volatile and colours the flame green, thus foreshadowing a content 
camphoric acid, he is in opposition to H. Kunz-Krause®), who lays stress upon 
fact that camphoric acid does not yield any volatile compound with copper, theref 
leaving the Bunsen flame unaffected. 
In the cumbustion method, which Hahn seaneaels calls Schimmel nietea ae 
departs from the usual way of execution in that he collects the combustion Brae 
in a funnel of about 1 litre capacity, instead of a Beaker | 
es Hast is ae 
being meanwhile “kent at a constant volume by heating with <a: small. Pee It n 
turbidity and making titration more difficult. The same is the case if the quantity 0 
liquid in the flask becomes too small. If, on the other hand, too much water c 
in the flask, the result will be too low, on account of the inewaplees evapo 
relations between acid content and saponification value could be found. 
In the presence of sodium acetate, semicarbazide hydrochloride, in ‘the th 
1) Deutsche Parf.-Ztg. 2 (1916), 95. — °) Reports October 1908, 13; April 1912, 151. 
in one of Gehe & Co.’s trade reports. — 5) Journ. ae chem. Sen. 37 (1919, 2 2382. 
