Romans still reckon up their rent or their wages in the old papal currency of a _scudo_ (five francs), and food is cried about the streets at so much the _paolo_ (half a franc). Half a _paolo_ (or _giulio_) the _grosso_, two _paoli_ the _papetto_, three _paoli_ a _testone_, and the halfpenny or _baioccho_ are still the familiar names which come most easily to the tongue. The difference between the old weights and the new, the papal scales and the decimal system of united Italy, is a fruitful source of gain to the tradesman. He clings, partly from sentiment and partly from self-interest, to the old unit of weight, the pound of twelve ounces, and as it appears nowhere on the official scales, he reckons it at one-third of the kilogram (330 grams) or, if you do not watch him carefully, at 300 grams, thus profiting from 1/100 to 1/10 on every kilo (1000 grams) sold. Similarly the Roman measure for firewood is a tightly packed cart-load, but the wood-seller is an adept at making a cart look full when it is not, and your only resource is to buy wood by the weight. Even then, if you desire to receive the quantity you order and pay for, you must not only see it weighed but you must keep an eye upon it on its journey to your house, or it will become beautifully less for the benefit of the carter. The charcoal for kitchen use you buy in a measured sack of a given weight. The first time you bestow your custom you are delighted with quality and quantity, but with each order the sack shrinks in size, and when you expostulate the coal-seller will answer you unblushing that if you insist upon having the coal weighed he cannot supply it at the price!