The box contained a light brown powder, and analysis showed the presence of (1) a large proportion of a powdered seaweed, agreeing well in characters with the powder of _Fucus vesiculosus_, its identity being further indicated by the composition of the ash; (2) a substance of proteid nature, agreeing well in characters with the powder of dried thyroid gland, its identity being further indicated by the presence of iodine in organic combination; (3) phenolphthalein; (4) sodium chloride (common salt); and (5) extractive. The last showed no well-marked characters by which it could be identified, and differed both in quantity and some minor properties from the extracts obtained from a specimen of powdered fucus which was used for comparison. This difference might quite well be due to differences in the drug or in the treatment it had received, or the extract may represent some other ingredient possessed of no distinctive characters; a trace of oil of peppermint was also present. Although it was easy to ascertain the nature of the ingredients the determination of the proportions in which they were present in such a mixture offered no little difficulty. It is not necessary to detail here the methods employed, but it will suffice to say that while every care was taken to make the results as accurate as possible, they cannot in the nature of the case be more than approximate. The formula arrived at was: In one Dose. Dried thyroid gland 14 per cent. 1·4 grain. Phenolphthalein 4 ” 0·4 ” Sodium chloride 7 ” 0·7 ” Powdered _Fucus vesiculosus_ 50 ” 5·0 grains. Extractive 25 ” 2·5 ” Oil of peppermint trace trace. Taking the “extractive” at the price of some of the commoner medicinal extracts, the estimated cost of the ingredients for half an ounce is about 4d. FIGUROIDS. The tablets sold under the name of Figuroids are or were recently supplied by a London Company, price 2s. 9d. per bottle, containing 12 large and 12 small tablets. They were described in a pamphlet enclosed in the package as A Scientific Obesity Cure discovered through an accident while making Scientific Investigations in the Laboratory. Other extracts from the pamphlet are as follows: