All Illustrations
Perseus & the Gorgons 
Desmophyllum pertusum, Peachia hastata, Etc. 
Corynactis viridis, Urticina felina, Etc. 
Calliactis parasitica, Cylista ornata, Etc. 
Metridium senile, Cylista elegans, Etc. 
Bolocera tuediae, Anemonia sulcata, Etc. 
Cereus pedunculatus, Sagartia viduata, Etc. 
Communards' Wall 
The Paris Commune—Allegory 
Freedom of Work 
Penniless 
The Streets Are Screaming
