Abstract The investigation was initiated with the object of using latex or rubber dispersions as a component of the sizes used for calico printing, dyeing, and stiffening, particularly as regards retention of stiffening ingredients and fillers. Dr. Stevens had, as collaborator, in the investigation, Dr. R. Gaunt, of Manchester, and facilities placed at the disposal of the Association by a firm of Textile Manufacturers. The research assistant who worked under Dr. Gaunt's supervision also availed himself of facilities afforded by the College of Technology, Manchester. The present report summarizes experimental work carried out by the research assistant, and the following are the more important matters dealt with: The microscopic examination of latex impregnated threads is of importance in showing that latex merely penetrates between the fibers but does not penetrate the fiber itself, and that modification of the fiber surface such as by mercerization or xanthation does not result in a closer union of fiber and rubber. The basic conditions under which fabrics take up latex have been investigated and it has been shown that the method of “padding” adopted considerably modifies the results. Under some conditions latex serum appears to be preferentially absorbed so that there is a deficiency of rubber in the cloth. The loss of rubber on soaping padded cloths is a mystery which has not been solved. Much of the work has been devoted to preventing the stickiness or damp feel of latex-treated fabrics. This defect can be eliminated to a great extent by soaking the finished fabric in warm water, but such treatment would not be practicable on a large scale. A satisfactory method of eliminating stickiness has not yet been found. In some cases when tackiness had disappeared the improvement had resulted from the oxidation of the rubber. The cause of the tackiness is not known except that it is probably due to a component in the latex. Attempts to remove this from the latex as by dialysis or the use of centrifuged latex were unsuccessful. A new material made by impregnating stockinette with latex is of interest. The stretch is greatly reduced, but a strip returns after stretching and maintains a tension when stretched like elastic webbing, though to a much less extent. This product may prove useful for bandaging and similar purposes. Also the use of latex as an adhesive for joining lengths of cloth in finishing processes is under trial. Preliminary work on the treatment of cloth with colored latex has been done. This mode of producing colored finishes will require further investigation. The full report is as follows.