Tyrer-Marsh arsenic apparatus
Dowzard's arsenic apparatus
Tyrer-Marsh arsenic apparatus
Kirkley-Gutzeit arsenic apparatus
Marsh's arsenic apparatus on wooden stand
Electrolytic arsenic apparatus with amalgamated lead cathode
Dixon Mann's arsenic apparatus
Standard pattern arsenic apparatus with burner
Dowzard's arsenic apparatus (Chem. News 4.7.1902)
1902