u 



OASE in the bark that, the woody core decaying away, the 

 18. stems finally become mere tortuous tubes of wax which 

 burn like a torch with a pleasant odour. 



No. 94. Parasol cover made of the fibre of the 

 Garden Nasturtium, not to be confounded with the 

 true Nasturtium (Watercress) belonging to the Crucifer 

 Order. 



The tribe Oxalideae of this order frequently has com- 

 pound leaves, which are sometimes sensitive, and possess 

 considerable acidity, due to the presence of an acid 

 oxalate of potash. Natives of tropical and temperate 

 countries, chiefly of South America or South Africa. 



The tubers of several species of Oxalis are edible after 

 being boiled ; those of O. crenata, Jacq., a native of Peru, 

 are exhibited. 



No. 95. Oxalic Acid, prepared from the Wood- 

 Sorrel {Oxalis Acetosella, L.). 



No. 96. The Bilimbi (Averrhoa Bilimhl, L.). The 

 fruit of a Tree-Sorrel cultivated in tropical countries. In 

 India it is generally used in pickles and in curry ; the 

 flowers are made into preserves. 



Notice also the Carambola {A. Caramhola, L.), 

 another widely cultivated species. The fruit is eaten in 

 India and elsewhere, and is said to be an excellent 

 antiscorbutic. 



Rue Order (Rutaceae), Chiefly trees or shrubs, widely 

 scattered over the warmer temperate regions of the globe ; 

 numerous in Australia, at the Cape, and in Tropical 

 America. The order is characterized by the prevalence 

 of a bitter, odorous, essential oil, contained in glands 

 scattered over the leaves, bark, &c. ; these parts in several 

 species are employed in medicine as febrifuges, antispas- 

 modics, &c. 



No. 97. CUSPARIA or ANGOSTURA Bark, from a 

 small tree (Cusparia febrifuga, Humb.), found in the 

 eastern parts of Venezuela. It is a stimulant aromatic 

 tonic and febrifuge, producing in large doses nausea and 

 purging. 



