The author discusses film manufacture at Kodak Park. He follows the fabrication of motion picture film from the raw materials to the finished product. The manufacture is divided into two segments: gelatin manufacture and the preparation of emulsions for coating, and all other processes such as solvent distillation, coating, perforations, and packing. The raw materials used for nitrate film are: cotton linters, sulfur, sodium nitrate, camphor, and solvents. Raw materials in safety support film manufacture are cotton linters, acetic anhydride, acetic acid, triphenyl phosphate and solvents. The emulsions are made up of hides, silver, nitric acid, potassium bromide, and sensitizing dyes.