Troy weight A grain is 20 mites, a mite is 24 droits, a droit is 20 perits, a perit is 24 blanks. In Scotland, the Incorporation of Goldsmiths of the City of Edinburgh used a system in multiples of sixteen. ("See Assay-Master's Accounts, 1681–1702, on loan from the Incorporation to the National Archives of Scotland".) Thus, there were 16 drops to the troy ounce, 16 ounces to the troy pound, and 16 pounds to the troy stone. The Scots had several other ways of measuring precious metals and gems, but this was the common usage for gold and silver. The Pound was
Australian Grains Genebank can be distinguished: this is most important for alpine seeds, as recent proofs show that grains from cooler and wetter habitats are shorter lived than seeds from warmer ones. Longevity checks can also indicate how seeds should be conserved. The main goal of the Australian Seed Bank Partnership is to save about 1700 native species of plant and ecological communities facing extinction due to habitat loss, and the fragmentation and degradation of invasive species. To accomplish this objective, the partnership maintains a safe and sustainable environment, and collects and stores seeds to help research on the subject. The Australian Grains