Period

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A mother taking her daughter to Mr Squills for him to help with her photographic chemical burns
ARP23A15_440

A mother taking her daughter to Mr Squills for him...

Johann Heinrich Schulze
ARP07114_010929P

Johann Heinrich Schulze

Production of Salpetre
ARP07104_460001057

Production of Salpetre

Checking the quality of Saltpetre
ARP07104_460001058

Checking the quality of Saltpetre

Crystallization of Saltpetre
ARP07104_460001059

Crystallization of Saltpetre