OF THE
POSITIVE
OR
AMBROTYPE PROCESS.
[CHAPTER IV.]
LEWIS'S PATENT VICES FOR HOLDING THE GLASS—CLEANING AND DRYING THE GLASS—COATING—EXPOSURE IN THE CAMERA—DEVELOPING—FIXING OR BRIGHTENING—BACKING UP, &C.
OF THE
POSITIVE
OR
AMBROTYPE PROCESS.
LEWIS'S PATENT VICES FOR HOLDING THE GLASS—CLEANING AND DRYING THE GLASS—COATING—EXPOSURE IN THE CAMERA—DEVELOPING—FIXING OR BRIGHTENING—BACKING UP, &C.