Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Elementa chemiae, : quæ anniversario labore docuit, in publicis, privatisque, scholis, / Hermannus Boerhaave. Tomus primus qui continet historiam et artis theoriam. Cum tabulis aeneis. Public Domain Mark. Source: Wellcome Collection.