ina ‘combustion tube over manganese protoxide heater” to gs Pe VM 
lecting in the receiver was dissolved in ether and washed first with \ aes then wv 
sodium carbonate Solution and dried with dry sodium eae 
benzhydrazone, 6 g. of the crude aldehyde’ were dissolved in a li 
a hot solution of 8 g. m-nitrobenzhydrazide. After 4 hours’ stirring, 17 gs. of the’ ‘hydra- a 
-abroad. Previous to the war, Germany was ‘the most important customer for menthol, 
whereas now America takes up at least 88 per cent. of the total ieee dats _ 
pie nk 3 
ihe m- nitrobenzhydrazone, m. p. 107 to 168°, We . could: ‘prove: thet Re of Curtius 
and Franzen’s leaf aldehyde. Its semicarbazone ‘melted ‘at.172 to 1739: 
pared by 1 i 3 g. of the distilled crude aldehyde with 5 sy semicatbaz 
after washing oak water, repeatedly from alcohol. For the: prepar 
tion oe the 1 ‘m-nitr 
tle alcohol and the 
solution mixed with 3 litres of water; to this mixture there was added, with ‘stirrin 
zone had separated which, after recrystallizing four times, showed the: eee moe 
as given above, and as found also by Curtius and Franzen. | ee a 
_ On this occasion, we prepared also the m- nitrobenzhydrazone of hexylic aldehyde; 
m. i) 115')to,. 1162, oe ae ey =. 
4G 
ie 
% 
Official estimates show that Japan had a sara peppermint crop in 1 19169). The % 
exports were 936882 kin). : ; cae 
Some time ago, we mentioned that the Ley aie iailornent was said to , be occupies 1 
industry *). Since then, we have not heard Cithine else on the Babee We gather, Sf 
however, from a more recent number of a periodical®) that the competent | circles in. zs 
Japan are convinced that it is necessary to. improve the organization of the pepper- 
mint industry. It is planned to make the peppermint growing and. the manufacture of 
menthol more rational in Hokkaido, by building distilleries in the chief producing - 
districts, in which the crude oil can be treated further, instead of snag it to eee | 
hama or Kobe. , sy 
The dementholized oil, left behind in the refining process, finds. increasing use 
refer to menthol. 
} 
As to the cultivation of peppermint, see pages 79 “— et his ste 
Petit-grain Oil. 
United States. As per a communication from the American Consulate a 
23040 Ibs. to the value of 8 35416 were Tate in 1915 and 33680, Ibs. ee 
1) Compt. rend. 158 (1914), 985. — le Der Neue Orient 2 (1918), 380. i 
this refers, perhaps to peppermint oil. Our repeated enquiries, addressed to the alto: oe the ; 
femained unanswered. — *) Comp. Report April 1915, 33. — 5) Monthly Trade Journal; 
Eng. Chemistry: Americ. Journ. Pharm. 91 (1918), 221. — °%) Chemist and Poe bet 0 (telat ; 
iG . . 
