![](https://coimages.sciencemuseumgroup.org.uk/18/897/large_thumbnail_e2010_29_1__0003_.jpg)
Specimen of compound derived from the constituents of natural substances belonging to F. B. Power
![SMG00274801](https://coimages.sciencemuseumgroup.org.uk/508/162/medium_smg00274801.jpg)
Specimens of compound derived from the constituents of natural substances, belonging to Dr. F. B. Power (Frederick Belding Power, 1853-1927), USA, 1900-1930. Noted as unspecified oil.