![](https://coimages.sciencemuseumgroup.org.uk/6/934/large_thumbnail_1996_0312__0001_.jpg)
Specimen of compound derived from the constituents of natural substances belonging to F. B. Power
![SMG00280000](https://coimages.sciencemuseumgroup.org.uk/508/637/medium_smg00280000.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 Barrium octanoate.