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SUMMARY A study was made of the occurrence of iridoid glycosides (giving a colour reaction with anisidine) in the Scrophulariaceae. Aucuboside, catalpol and antirrhinoside were found in many species: in addition some hitherto unknown, presumably iridoid glycosides were found. Most tribes were homogeneous as to the types of glycosides present, while the subfamilies were not. On the basis of the prevailing glycosides the family can be segregated into the following groups: taxa devoid of glycosides (most Gratioleae, the Calceolarieae, most Digitaleae, Sphenandra, Sutera p.p., and Nemesia). taxa containing aucuboside and (or) catalpol (Verbasceae, Scrophularieae, Collinsieae Hemiphragmeae, Buchnereae, Veroniceae, Rhinantheae, Sutera p.p., Limosella, Mazus, Zaluzianskya, Angelonia, Diascia, Erinus, and Rehmannia). taxa containing antirrhinoside (Antirrhineae). the Selaginoideae with unidentified glysosides. The genera Leucocarpus, Halleria, and Alonsoa have aberrant, but presumably iridoid glycosides, and therefore do not fit in any of the groups mentioned.

1)A colorimetric method has been elaborated for the determination of amyloids in plant seeds, based on the blue colour of the iodine complex in concentrated sodium sulphate solution.2) Details of the method are given and its possibilities and limitations are outlined.3) Three procedures for removing interfering starch are recommended. IntroductionDuring work on the amyloids in plant seeds a method was needed for the determination of the quantity of amyloid present in seeds themselves and in seed-extracts. As no method is to be found in the literature the following one was elaborated.The most characteristic property of the amyloids is their ability to form a blue colour on addition of potassium triiodide solution.In solution, they give a blue colour only when relatively concentrated, e.g. when 4a/, solutions are used; less concentrated solutions (e.g.