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 engraven formerly by Hollar. In fact, the number of the plates which he has done from drawings of this painter, are near one hundred, which compose different series. The author of the Letter adds, that, if a conjecture might be permitted, we might affirm, that this is the collection of heads of which Paul Lomazzo speaks; at least the description which he gives of a similar collection which was in the hands of Aurelio Lovino, a painter of Milan, corresponds with this as well in the number of the drawings as their subjects. It represents, like this, studies from old men, countrymen, wrinkled old women, which are all laughing. Another part of this Letter says, it is easy to believe that the collection of drawings of heads which occasioned this Letter, might be one of those books in which Leonardo noted the most singular countenances.

In p. of the same Letter, Hollar’s engravings are said to be about an hundred, and to have been done at Antwerp in, and the following year; and in p. , Count Caylus’s publication is said to contain  plates in aqua fortis, done in , and that this latter is the work so often mentioned in the Letter.

Another collection of the same kind of caricature heads mentioned in Mariette’s Letter, as existing in the cabinet of either the King of Spain or the King of Sardinia. Rh