Extracto-resinous materials

These immediate materials of the last combination, which considered chemically constitute a vegetable, are the distilled waters, the essential oils, the balsams, the gum-iesins, the resins, the extracts, the intermediate bodies between the last two [bodies] called by M. Rouelle, who observed them first, the resino-extractive and extracto-resinous [materials], the oils per decoction, several species of mucilage, the essential salts, the coloring parts, and so on. ... 

Chemists also combined the familiar names of vegetable juices to designate new plant materials obtained in the laboratory, as was the case with G. F. Rouelle s resino-extractive and extracto-resinous materials. In the middle of the eighteenth century. 

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