1784 STIMULANT, AROMATIC, NARCOTIC AND MEDICINAL Pl-ANTS 



, ^ . .^- 



by the Chinese and the neglecting of several necessary measures by the 

 Bankanese. Which of the ineasiAres of the Chinese is the most important 

 cannot be stated theoretically. Only experiments especially arranged for 

 this purpose can settle this point. 



1287 - Notes on the Extraction of Citronella Oil. — Jong a. w. K.in Teysmannia, 



Year XXVII, Nos. 4 and 5, pp. 246-252. Batavia, i()i6. 



Experiments have been made which show that the drying of citronella 

 leaves {Andropogon Nardns) before distillation gives good results. Drying 

 in the sun must be avoided, as this causes a rather heavy loss of 

 essential oil. 



Leaves that have been cut into pieces from 3 to 5 cm. square are more 

 easily extracted than entire leaves. In the process of distillation care nuist be 

 taken not to use any un-tinned metal tubes, as lead and copper form sulphates 

 which discolour the oil. 



1288 - Tobacco Growing in the Illyrian Region.— baldacci a., mMinisterio deiic n- 



nanze, Direzione generate delle Privative, Bollettino tecnico della Coltivazione dei Tabacchi 

 pubblicato per cura del R. Istituto Sperimentale in Scajati {Salerno), Year XV, Nos. i and 2, 

 pp. 3-28. Scafati, January-February and March -April 1916. 

 Dalmatia. — Tobacco growing has been carried on in the Illyrian 

 region for some centuries, and after the annexion of Dalmatia to Austria 

 it became a nlonopoh^ The Austrian Government then experimented 

 with Herzegovinian tobacco and obtained good results by selection. Af- 

 terwards a long series of investigations were made with Macedonian tobacco 

 and later still with American types. In 1863 Trebinyan tobacco was 

 acknowledged as the best, and the other types were gradually given up. 

 When cigarette smoking came into fashion experiments were begun 

 (1884) to improve the cigarette tobacco. These trials were carried on in 

 vSouthern Dalmatia, as this was the only country in Austria-Hungary 

 which produced this type of tobacco. Herzegovinian (Trebesat and Me- 

 giugorge) and Turkish (Giubek-Yaka, Kir-Yaka, Porsician, etc.) types were 

 tested ; vSumatra types were also tried, but were quicklj^ abandoned as 

 they gave such poor results. During the next twenty years the Dalmatian 

 hybrids deteriorated more and more rapidly on account of imperfect 

 selection, so fresh improvements were made. The best results were 

 obtained by crossing Macedonian and Herzegovinian tobaccos. This 

 method however, brought two difficulties in its train : 



i) A great lack of uniformity in the crops was caused by the inter- 

 crossing wliich occurred owing to the presence of so many different varieties 

 in the country. 



2) The climatic and soil conditions caused the plants to reveit to 

 the wild type. 



The Government was thus compelled to attempt fresh improvements : 

 i) To raise good hybrids adapted to the climate and soil of the 

 different localities ; 



2) To fix and acclimatize the hybrids ; 



