¶Of the hearing. Cap. 18.
THe vertue of hearing, hath effect and doing in the lims of the eares. And the hering is properly a vertue ye percei∣ueth so winds: & to make perfect hearing, foure things at the lest be néedful, yt is to wit, the cause efficient, a couenable lim, a niene space bringing ordinately ye sownd to the wit, and the soule •• taking héede thereto. The cause efficient is the ver∣tue that is called. Animalis audibilis, of féelyng and hearing. The couenable lim is a gristle bone set in the care, and is hollow and drye and some deale harde, wound & wrapped as a wispe or wreath. It is hollow, that it maye containe the spirite and arre in the hollownesse ther∣of. It is woond & wrapped as a wreath, least the spirit of hearing should be aslo∣med and hurt by sodam and strong smi∣ting. And therefore by circularitie of the limme, sownd temperately receiued, beateth not againe the spirit of hearing, but maketh it perfect, and is liking ther∣to. Also it is harde and drye, that so the smiting of the aire may bée made better and stronger, and the sownd the more. As in tabers and timbrels that sownd bet∣ter in the Northerne winde that is cold and drye, then in the Southerne winde, that is méeke, moyst & soft, as Constan∣tinus and Aristotle say. The space that bringeth is aire rebounding, that goeth into the holes of the eares, and smiteth the gristle bone, that is the first instru∣ment and lymme of the hearing, and it needeth that the soule take heede, For so long as it is thoughtful and intendeth to diuers things, it is the lesse mightie to doe the deed of the vertue of hearing, as we sée in many, that be beset all about: for welnigh they heare nothing, while the thought taketh no héed. And therfore nothing is perceiued by hearing. Hea∣ring is made in this manner. Two si∣newes come out of the inner part of the brayne, & be fastened in the gristle bone of the eare: by the which sinewes, the spirite Animalis is brought to the fore∣said gristle bones, to which gristle bones the vtter aire referring the shape & lyke∣nesse of some sownde is meanlye ioyned thereto, and so the aire that is smitten, smiteth those gristle bones, and in them being the spirit, by the propertie of the aire, that is therein smiting, the sinewes is chaunged. And so the spirite taking a lykenesse turneth to his Cell fantastike, & presentoth that lykenesse to the soule, & so the hearing is made perfect. Wher∣fore it appereth, that the hearing is aire: for alway it is multiplied by reboūding. And therefore it is, that kinde set, ye ••it of hearing, in the middle of the rounde head, as Arist. saith li. 12. For ye hearing, as it were in a manner winding about