xliv. ABSTRACT OF PROCEEDINGS. 



than 5 per cent. The oil is obtained from the leaves of the 

 plant, these are, however, very small. The colour of the crude 

 oil is reddish-brown. The specific gravity was '9154 at 19° C, 

 the rotation in 100 mm. tube after removing the colour was 

 + 1-2°, it was not soluble in 70 per cent, alcohol, but was so in 

 90 per cent. On distillation only 5 per cent, came over below 

 222°, showing an absence of terpenes, cineol, and other constituents 

 having a low boiling point, between 222° and 240°, 64 per cent, 

 distilled. The saponification was readily carried out in the cold, 

 using semi-normal alcoholic potash. The alcohol distilled at 

 228 - 230° under atmospheric pressure formed a solid compound 

 with calcium chloride, formed citral on oxidation, (proved by its 

 odour and the formation by Doebner's reaction of the alcyl-/3-naphto- 

 cinchoninic acid melting 197 - 198°) and had a fine rose odour, had 

 no rotation, was soluble in 55 per cent, alcohol to a clear solution. 

 The acid was principally acetic acid, but contained a minute 

 quantity of a higher acid. Geraniol is the principal constituent 

 of the liquid portion of rose oil, and is found in Geranium oil 

 obtained from Pelargonium sp., also in the so called geranium oil 

 obtained from the grass Andropogon sp. It has been also found 

 in a few other plants. The essential oil from D, taxifolia was 

 shown to differ considerably in its properties and constituents 

 from D. fascicularis ; in comparison it has apparently little 

 commercial value. 



2. " On N. S. Wales Copper Ores containing Iodine," by Arthur 

 Dieseldorff, m.e. (Communicated by A. J. Bensusan, 



Assoc. R.S.M., F.C.S.) 



The author (who was on a visit to N. S. Wales a few years ago) 

 was interested in the discovery of iodine in a sample of cuprite 

 from Cobar by Dr. W. Autenrieth of the University of Freiberg, 

 Baden. He made further investigations himself as shewn by the 

 paper, resulting in his proving the presence of iodine in several 

 different samples sent to him from the colony. He points out 

 that the subject is not of commercial interest, the iodine being 

 present in such small percentages, but he thinks should copper 



