Nineteen samples, taken from a 17th-century Glovers' dance dress (Perth Museum and Art Gallery), were analyzed for fiber content and dye. Eighteen of the samples were found to be silk; the nineteenth linen. Using x-ray fluorescence spectroscopy, researchers looked for the presence of indigotin in the blue and green samples and of madder, kermes, or cochineal in the red and pink samples. The results of the dye analysis were not entirely in keeping with the 17th century date of the costume. However, the samples containing the anomalous indigodisuphonic acid appear to belong to mid-19th century repairs.