12 REPORT OF SCHIMMEL & Co. OCTOBER 1915. 
(20 to 30 cwts. per about 2'/2 acres); in good caraway districts as many as 40 bags 
were obtained per 2'/2 acres. | 
The following table illustrates the importance of the trade .in caraway seed during 
the last few years: — 
Import and Export of caraway seed to and from Holland. 
Year Import Export 
1905 . . . . 60000 kg. 4.669000 kg. 
10065 2%) res ahd COO 5952000 ,, 
1907s ehh es a O0U 6286000 ,, 
1908. ae O00 5429000 _,, 
f90ON Ft. d 1th Oo OOO hae 8312000 ,, 
LOIO 2 Oa Seo O00 Rs 6149000 ,, 
1901 & ic a. MAO O00. 8988000 ,, 
1092 OOO tare 4298 000 _,, 
The imports shewed the following figures: — 
in 1911 total 109970 kg., value fl. 26392.— 
Malta (2)- 20 it. A) ir, Se ee aoe ices 
of which*from |. Great Britains’... ..- 2.94 ee ieee 
Germany °-% Oh.) ou 2 ae eee 
in 1912 total 94209 kg., value fl. 15410.— 
Malta. (2) 2.00) oo soctety vi eit rare polled 'olayheg eae, WP OM One 
of. which from.7) Germany <, 5} as.) & obs ea ee ee 
United States.5 cs 7 js nee ee Oe 
The exports amounted to: 
in 1911 total 8988081 kg., value fl. 2 157 139.— 
| Germany, .< ect iste. degehe Ya cao 42 NO Olas 
of which to | United..States .. ..2 7 «2. % 27 Ieee 
| Great ‘Britain . .2.5,.°%:..% «=. 1 OZoC0ee 
in 1912 total 4297847 kg., value fl. 1031 483.— 
| Germafiy?? (2. Se Rak < DAOT A Tie 
of which to {. United States .o fe)". 3 = VO2F2893* 
Great ‘Britain. *'Y 96 oe 29% 7 ASTAOO eas 
The caraway seeds originating from different districts of Holland showed differences 
as regards content and quality of the oil. In order to ascertain the causes it was 
necessary to determine oil content and quality of a considerable number of samples. 
Inasmuch as Zijlstra had but little material at his disposal, he chose the method 
indicated by Beckmann‘) for the determination of oil percentage by ascertaining the 
depression of the freezing point. The carvone content of the oil he calculated from 
the refractory index. | 
As will be known, according to Beckmann’s method the depression of an extract 
of comminuted seed, produced with ethyl bromide, is first determined, followed by 
determination of the depression of an extract of seeds from which the oil has first 
1) Arch. der Pharm. 245 (1907), 211; Report October 1906, 104; October 1907, 114. 
