Chemistry of Essential Oils

394 THE CHEMISTEY OF ESSENTIAL OILS

The roses which are under cultivation in France for perfumery

purposes exclusively are high in price, because the May rose bushes (Centi-

folia or Damascena) are of fairly weak growth; they do not grow more

than 60 cm. in height, and only bear a few small roses of little
weight.
This is also a reason why these roses are specially used for " enfleur-
age,' hot or cold, for the manufacture of pomades, oils, and rose extracts.