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“You’ll have a new barn in no time,” I said, wiping an already dry plate with a towel.

Replacing the expensive and deadly daguerreotype process which debuted in the 183os, wet plate photography peaked in the 1870s and began to wane in roughly 1884 when the dry plate process came out.

In 1881, at age 17, Louis discovered a way to capture images on dry plates with gelatin silver bromide.

Oxymel produced a dry plate that could be kept for days.

So a supersensitive dry plate will often record many thousand stars in a region where the naked eye can see but one.