204 



SELECT PLANTS READILY ELIGIBLE 



tartarea, L. parella, Pertusaria communis, Parmelia sordida, 

 Isidium corallinum and some others, which furnish the Cud- 

 bear or Persio. 



Rosa centifolia, Linne. 



The Cabbage-Rose. Indigenous on the Caucasus and seem- 

 ingly also in other parts of the Orient. Much grown in 

 South Europe and South Asia for the distillation of Pose- 

 water and Oil or Attar of Poses. From 12,000 to 16,000 

 Poses, or from 2501bs. to SOOlbs. of Pose-petals are required 

 according to some calculations for producing a single ounce 

 of Attar through ordinary distillation. The flowers requii-e 

 to be cut just before expansion; the calyx is separated and 

 rejected; the remaining portions of the flowers are then sub- 

 jected to aqueous distillation, and the saturated Pose- water 

 so obtained is repeatedly used for renewed distillation, when 

 from the overcharged water the oil separates on a cold place 

 and floats on the surface. But some otJier methods exist for 

 producing the oil, for instance it may be got by distilling the 

 rosebuds without water at the heat of a saltwater bath. 

 The odour may also be withdrawn by alcoholic distillation 

 from the Poses, or be extracted by the "enfleurage" process. 

 The latter is effected by placing the flowers, collected while 

 the weather is warm, into shallow frames covered with a 

 glass plate, on the inner side of which a pure fatty substance 

 has been thinly spread. The odour of the flowers is 

 absorbed by the adipose or oleous substance, though the 

 blossoms do not come with it in direct contact ; fresh flowers 

 are supplied daily for weeks. The scent is finally withdrawn 

 from its matrix by maceration with pure alcohol. Mr. Jos. 

 Bosisto's method for obtaining the most delicate and precious 

 volatile oils will likely be applicable also to the Pose, and 

 prove more advantageous both in labour and gain than any 

 other process. Purified Eucalyptus-oil can be used for 

 diluting Pose-oil, when it is required for the preparation of 

 scented soap. 



Rosa Damascena, Miller. 



Orient. Allied to the preceding species, and also largely 

 used for the production of Essential Oil of Poses. 



Rosa Gallic a, Linne. 



The French or Dutch Pose. Middle and South Europe, 

 Orient. The intensely coloured buds of this species are par- 

 ticularly chosen for drying. These however may be got also 

 from other kinds of Poses. 



Rosa Indica, Linne. 



Noisette Pose. From Upper India to China and Japan. Some 

 Poses of the sweetest scent are derived from this species. 



