144 THE USES OF PLANTS. 



moms, Galangale and Calamus depend for their phar- 

 maceutic value, mention ought, perhaps, to be again 

 made of the Grass oils, perfumed volatile oils, dis- 

 tilled from fresh plants. 



Andropogon Nardus, L., yields ClTRONELLA OIL, 

 used in scenting Honey Soap.* 



A. citratus, DC, LEMON GRASS, yields OIL OF 

 VERBENA or LEMON. This was figured in Wallich's 

 * Plant. Asiat. Rar.' (t. 280) as A. Schcenanthus. 



A. Schcenanthus,- L., non Wallich ( = A. Martini, 

 Roxb., A. Pachnodes, Trinius, A. Calamus-aromaticus, 

 Royle) yields the RuSA OIL, OIL OF GINGER GRASS, 

 or OIL OF GERANIUM, used to adulterate Attar of 

 Roses. 



CONIFERS. 



The hydrocarbon OILS OF SAVIN ( Juniper us Sabina, 

 L.), JUNIPER (/. communis, L.), SPRUCE or HEMLOCK 

 (Tsuga Canadensis, Carr.), and TURPENTINE (Pinus 

 sylvestris, L., P. Pinaster, Sol., P. Laricio, Poir., P. 

 longifolia, Lambert, of the Himalayas, P. Tada, L., 

 and P. austmlis, Michx., Abies pectinata, DC., and 

 Larix europ&a, DC.), have been already sufficiently 

 referred to (see pp. 124, 125, supra}. 



PART IV. GUMS, RESINS, OLEO-RESINS, 

 AND INSPISSATED SAPS. 



As in external form, so in internal and chemical con- 

 stitution, the variety of Nature and the minuteness 



* Bentley and Trimen, iv, pi. 297 ; ' Pharmacographia,' p. 

 660. 



