164 



CASE Near these are shown tubers of Plectranthiis madacfas- 



90. cariensis, Bth., and of Coleus parvijiorus^ Bth., the former 



occasionally cultivated in Madagascar and Mauritius as an 



article of food, and the latter in Java for the same 



purpose. 



No. 398. Lavender Oil is distilled from the flowers 

 of Lavandula vera, DC. A native of the South of France, 

 Spain, North Italy, and other parts of the Mediterranean, 

 It is cultivated extensively in the neighbourhood of 

 Mitcham in Surrey, as well as in Lincolnshire. The oil 

 distilled from the plants grown at Mitcham is considered 

 the finest quality, and fetches the highest price. It is 

 chiefly used in perfumery. 



No. 399. Patchouli, the essential oil of Pogostemon 

 Heyneanus, Bth. [P. Patchouli, Pell.], a plant of India. 

 A powerful perfume, not so much used in this country at 

 the present day as formerly. 



No. 400. Japanese Paper, steeped with " Yegoma," 

 oil, obtained from the seeds of Perilla ocymoides^ L., made 

 to imitate leather, and used for walls of rooms, book- 

 binding, &c., also for water-proof papers for windows, 

 umbrellas, &c. Seeds of P. ocymoides, L., and oil 

 expressed from them in Japan, are shown. 



Observe herb of PENNYROYAL {Mentha Pulegium, L.), 

 carminative and stimulant. Spearmint (If. viridis, L.), 

 also used as a carminative, as well as for flavouring. Oil 

 is distilled from this plant chiefly in the United States, 

 where it is used as a perfume by soap makers. 



On a lower shelf are specimens of Japan Peppermint 

 (Mentha arvensis, L. var.), and oil. Also Menthol, or 

 Peppermint Camphor, the crystalline portion of the oil, 

 used in neuralgia and as an antiseptic. 



No. 401. Peppermint (Mentha piperita, L.)- A 

 well known perennial, a doubtful native of this country, 

 but extensively cultivated for medicinal purposes in the 

 neighbourhood of Mitcham, Lincoln, Cambridge, and 

 Herts. Two forms of Peppermint are cultivated at 

 Mitcham, one known as the Black Mint, and the other the 

 White Mint, both of which are forms of M. piperitay var. 

 officinalis. The white yields the best oil. Peppermint is 



