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  Item Reference: KCLCAL-1863-1864-150

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150 APPLIED SCIENCES Developing Solutions -Protonitrate of Iron for Positives- Sulphate of Iron-Pyrogallic Acid-Mode of testing Purity of Water and of separating Lime Salts when present the positive process on glass Cleaning the Glasses -With old Collodion-with Tripoli and Ammonia-with Nitric Acid to remove Iron Stains Preparing the dark Room -Its Illumination by Yellow Light -Arrangement of Apparatus Manipulations -c -The Collodion-Use of Bromide-Free Nitric Acid in the Bath-Effects of Under and Over-Exposure in the Camera-Excessive and Deficient Development-Fixing Varnishing &c collodion negatives The Collodion and Bath -Iodide of Cadmium as an Iodizer -its Advantages and Defects-Iodide of Potassium-Inju- nous Action of Nitric Acid in the Bath-Effect of Acetate of Soda-of Glycyrrhizine and Organic Bodies in the Collodion -Decomposition of Collodion by keeping Developing Solutions -Use of Sulphate of Iron to restrain excessive intensity-of Acetate of Soda to increase intensity- Mode of Pushing the Development Failures in the Negative Process -Spots Markings Defective Development &c -Specimens of Perfect Negatives photographic printing Preparation of the Sensitive Papers -English and Foreign Papers-Details of the Albumen Process-of the Plain Paper Process of the Process with Ammonia Nitrate-Use of Organic Matters in varying the Colour-how to Print feeble and intense Negatives Toning the Prints -With Hyposulphite and Gold-with Sel d'Or-with Alkaline Solution of Chloride of Gold after fixing-with Fulminating Gold in Hyposulphite of Soda photographic printing-continued Fading of Photographs -Its Causes explained how to obviate them-Sulphur Toning-Gold Toning-best Mode of Washing and Mounting Prints
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