94 
proportions of carbon, £0 hydrogene, and 1 
oxygene. 
The following is a list of fixed oils, and of the 
trees that afford them. 
Olive oil, from the Olive tree ( Olea Europea), 
Linseed oil, from the common and perennial Flax 
( Linum usitatissimum et perenne). Nut oil, from the 
Hazel nut ( Coryllus avellana), Walnut ( Juglans 
regia). Hemp oil, from the Hemp (Cannabis sativa), 
Almond oil, from the sweet Almond (Amygdalus 
communis). Beech oil, from the common Beech 
(Fagus sylvatica), Rape-seed oil, from the Rapes 
( Brassica napus et campestris ), Poppy oil, from the 
Poppy ( Fapaver somniferum), oil of Sesamum, 
from the Sesamum (Sesamum orientate). Cucumber 
oil, from the gourds (Cucurbita pepo et malapepo) 9 
oil of Mustard, from the Mustard (Sinapis nigra et 
arvensis) oil of Sunflower, from the annual and 
perennial Sunflower (Helianthus annuuset perennis). 
Castor oil, from the Palma Christi (Ricinus com- 
munis), Tobacco-seed oil, from the Tobacco (Nico- 
tiana tabacum et rustica). Plum kernel oil, from the 
Plum tree (Prunus domestica), Grape-seed oil, 
from the Vine ( Vitis vinifera), Butter of cacoa, 
from the Cacoa tree (Theobroma cacao). Laurel 
oil, from the sweet Bay tree (Lauras nobilis ). 
The fixed oils are very nutritive substances; 
they are of great importance in their applications 
to the purposes of life. Fixed oil, in combination 
with soda, forms the finest kind of hard soap. The 
fixed oils are used extensively in the mechanical 
arts, and for the preparation of pigments and 
varnishes. 
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