Abstract: There is described a carton which comprises first, second, third and fourth rectangular side walls hingedly connected in sequence along parallel edges, first and second pairs of opposed overlapping end walls connected to the edges of first and third walls whereby the side walls and the opposed end walls form an enclosure when the overlapping end walls are adhered together and the first and the fourth rectangular side walls are adherently connected by use of an extended end portion of either the first or fourth rectangular side walls, there being tear lines where each of the pair of end walls are connected to the edges of the first side wall, together with a tear line extending across the fourth side wall to both ends of the adjacent edge of the first side wall, whereby the first side wall can be disengaged from a portion of the fourth side wall and from the end walls so that the carton can be opened flat when all three tear lines are severed.

Abstract: A method of incorporating water insoluble additives (e.g. sensitizing dyes) in colloid layers of photographic silver halide material is provided. The additives are dissolved in a fused water soluble organic compound (e.g. sorbitol or succinimide) and the resulting mixture is either directly added to an aqueous photographic emulsion or is dissolved in the minimum of water or organic solvent and this concentrated aqueous solution is then added to the aqueous photographic emulsion and the whole is then coated as a layer which is part of a photographic material.

Abstract: Photographic additives in particular water-insoluble photographic additives are rendered easier to incorporate into photographic layers by finely dividing them, mixing them with a finely divided water soluble substance and compressing the resulting mixture into the form of a tablet. The tablets which contain from about 1 to 50% by weight of the photographic additives are then dissolved in the coating composition and this disperses the water insoluble additive uniformly throughout the coating composition.

Abstract: Photographic additives in particular water insoluble photographic additives are rendered easier to incorporate into photographic layers by finely dividing them, mixing them with a finely divided water soluble substance and preparing granules of the mixture using a hydrophilic colloid as the binder. The granules which contain from about 1 to 50% by weight of the photographic additives are then dissolved in the coating composition and this disperses the water insoluble additive uniformly throughout the coating composition.