CONTENTS.
active 1854-1890 John Werge
INTRODUCTION
1
FIRST PERIOD.
The Dark Ages
3
SECOND PERIOD.
Publicity and Progress
27
THIRD PERIOD.
Collodion Triumphant
58
FOURTH PERIOD.
Gelatine Successful
95
CHRONOLOGICAL RECORD.
Inventions, Discoveries, etc.
126
CONTRIBUTIONS TO PHOTOGRAPHIC LITERATURE.
140
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