the lower section, Michallet’s crayon paper (creain tint) gives fine reds by merely fixing without washing. Whatman’s draw- springs uniting the arms of the respective sections, while side springs connected at one end near the center ing paper will yield similar red tints if treated with of one… … An acid sensitizing solution may be employed, add- ing one drop per ounce of nitric acid instead of the ammonia, or a proportion of citric acid if desired. The the crosshead carrying saucers to receive the glasses, latter addition greatly modifies the color of finished rocking movement of the seat…
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