All the Sea oul apaye: -mentioned essential ft 
 Filable eymulenc CORRES, Methylealienaes can replace ga theria 
by Scale: Piigue takes the place of tifpentive ‘i and chloe 
instead of cinnamon oil. Origanum oil is replaced by carvacrol 1). fin 
is still indeed considered necessary on account of its apathy for ce 
‘ 
and drugs. According to most methods, frequently modified, the. sai is ‘leans 
distilled and the oil obtained from the distillate saturated with common salt, by shakin; : 
up thoroughly with a volatile solvent. All these processes’), already described al 
discussed by us, yielded no exact results, since the sources of error in getting rid 
the solvent are unavoidable. On the contrary, Viehoever thinks he. can atrive at bett 
results if he mechanically separates the oil and water in the distillate, and calcula 
the percentage content from the volume and specific gravity of the oil. In the Repor 3 
of April 1914, p. 120, we have discussed a vee) dependinia. on the same Lag ples 
meter’, has estimated the: volatile oils in plants: fale Spices. In a etho 
gives useful results. TCA UO Ni Se 
SRS eat eG - ba i yoke i yageey td 
1) Cf. Report April 1898, 51. — 7%) Salidini de Asculo scueumenne principis: Tarentin 
compendium aromatariorum. Published by Dr. Zimmermann, Leipzig 1919, ae | 
Price 8 marks. — *%) As per Schweiz. Atak. f Chem. uw. Pharm. Bt. Pane — 
Official Agricult. Chem. 3 (1920), 381. — 
*) desetbaeen Beato 15. (1900), 441, 453; 16 (1901), 742. 
~ 
