old names and with the old relationships to one another, but with metric-based and slightly changed absolute sizes. This series of measurements was called mesures usuelles. Napoleon's decree was eventually revoked during the reign of Louis Philippe by the loi du 4 juillet 1837 (law of 4 July 1837), which took effect on 1 January 1840, and reinstated the original metric system. This brought the system of mesures usuelles to a legal end, though the livre remains in some informal use to this day. Permitted units The law authorised the following units of measure: The toise (fathom) was defined as exactly two metres and was as before divided into 6 pieds (or "feet") or 72 pouces (inches). The pouce was divided into 12 lignes (or "lines"). The pied and pouce, at approximately 333.3 mm and 27.78 mm, were about 2.6% larger than the previous Parisian measures and 9% larger than their British counterparts. The aune (ell), used to measure cloth, was defined as 120 centimetres, and divided into the demi aune (half an ell, or 60 cm) and the tiers aune (third of an ell, or 40 cm). It was 1.3% larger than l’aune de Paris (118.48 cm) and 5.0% larger than its English counterpart (45 inches; 114.3 cm). The litre was subdivided like an English quart, into demis (literally, "halves", being the equivalent of a pint of about sixteen fluid ounces), quarts (literally, "fourths", being the equivalent of a cup of about eight fluid ounces), huitièmes (literally, "eighths") and seizièmes (literally, "sixteenths", of about two fluid ounces). The boisseau, (bushel), was redefined as being an eighth of a hectolitre and with associated measures double-boisseau, demi-boisseau and quart-boisseau (double, half and quarter bushels respectively). The original boisseau, like the English bushel, varied depending on the commodity for which it was used, as well as the region where it was used. The livre, (pound), was defined as 500 grams, divided into 16 onces, (ounces), each once being divided into 8 gros. Each gros being thought of as being composed of 72 grains, whose name is the same as in English. Hence, the livre was 9216 grains. The livre and once were about 10% larger than their English counterparts, while the grain was 17% less than its English counterpart. The mesures usuelles did not include any units of length greater than the toise - the myriamètre (10 km) remaining in use throughout