According to the figures given, from 2132,2 to 3731,3 kilos of Anatolian 

 roses are needed to produce 1 kilo of oil, that is to say on an average 

 the same weight as in Bulgaria, while in Germany from 5000 to 6000 kilos 

 flowers of the same species of roses are needed to produce 1 kilo of oil. 

 But as the particulars quoted above are obviously inaccurate so far as 

 the pecuniary returns are concerned (according to them the cost of a kilo 

 of oil would amount to from 447,25 to 426,89 Marks), the other data must 

 probably also be accepted with reserve, at any rate, we must leave to the 

 writer of the article the responsibility for their accuracy. 



Rosemary Oil. Business in the two varieties listed by us has been 

 rather quiet and there is consequently but little to report. The French 

 producers continue to complain of the keen competition offered by the 

 Spanish distillers, whose oil has gradually reached such a degree of 

 excellence that it cannot now be classed as inferior, either in respect of 

 odour or of physical properties. From the producing centres in Tunis 

 we have received no news whatever lately. Dalmatian rosemary oil is 

 obtainable in sufficient quantities. Owing to the alteration in the denaturing 

 regulations in Germany the consumption of this variety of oil has fallen 

 off considerably. 



Rosewood Oil. In our Report of April 1911, p. 97, we discussed an 

 article by E. Holmes on the botanical origin of Lignum Rhodium, in which 

 Genista canariensis or virgata was mentioned as the probable parent-plant 

 of this drug. Since that time, Holmes 1 ) has been in correspondence with 

 Dr. G. K. Perez, of Teneriffe, from whom he has obtained many interesting 

 data concerning Lignum Rhodium. According to Perez, the Canary rose- 

 woods were mainly Convolvulus Scoparius, commonly called "Retamon" or 

 "Lena Noel" by the peasants. Retamon, however, is also the local name 

 for Genista canariensis. It is not surprising that the two plants should be 

 confused, for when not in flower they resemble each other so closely as 

 to deceive even botanists. In Teneriffe, Convolvulus floridus is known as 

 Guiadil. Its wood has a much fainter odour than that of Convolvulus 

 Scoparius. The latter was formerly exported in such quantities (Dr. Perez 

 believes to Germany), that the plant has been almost eradicated. Genista 

 virgata is extremely rare in Teneriffe and has only recently been refound 

 there by a German botanist. It appears to be only a variety of a Genista 

 species which is very common in the island. Perez does not believe that 

 the wood of Genista virgata is rose-scented, but of Convolvulus Scoparius 

 he declares that the wood possesses such a powerful aroma of roses that 

 a small piece of it is sufficient to scent a drawer with clothes. Convolvulus 

 Scoparius has a variety virgatus Choisy, which may possibly have led to 

 the belief that Genista virgata is the parent-plant of Lignum Rhodium, 



x ) Perfum. and Essent. Oil Becord 3 (1912), 224. 



