150 Appendix I four and a half feet and a width of one foot and two ounces, for each of the two, namely for the church of Our Lady of Bissone on the middle island [Lopud], in the right proportions and with the decorations appropriate to the work of his art, according to the shape and drawn model(?109). In my presence as public notary (cancellarius), 72 ducats were handed over to the same Master Urban by the aforementioned Blasius and [the contract] signed. With the information given in the contract the shape of the agreed object remains unclear, this might have been specified verbally or within a drawn modello. As pigment and goldleaf are not mentioned here it is obvious, that a separate contract with a painter or indoradori had existed. It is also astonishing that the contract makes no reference to the subject matter of the work. It may be assumed that the units used in the contract were Venetian, rather than Ragusan. In the Venetian measuring system, the ratio of 1 ounce to 1 foot is 1:12, and in the Dubrovnik system it is 1:8. 12 is divisible by 2, 3 and 4, while 8 is divisible only by 2 and 4. Thus, the given length of 8 1/3 can be expressed as 8 feet and 4 ounces in the Venetian system, whereas the Ragusan system does not give whole units here (8 feet and 2,666 ounces). Furthermore, the length given as 2 feet 8 ounces does not make much sense in the system of Dubrovnik, because it actually equals 3 feet. To make it easier to interpret the values specified in the contract, they have been converted. This at least clarifies the dimensions of the contracted workpiece: Venetian foot: 0,347m = 12 ounces / one ounce (uncia): 2,897cm110 given value calculated dimension (rounded) 13 feet (length) 4,52m 8 ⅓ feet (width) [8 feet 4 ounces] 2,87m 3 feet 3 ounces 1,13m 2 feet 8 ounces 0,93m 4 ½ feet [4 feet 6 ounces] 1,56m 1 foot 2 ounces 0,40m
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