Sir, The undersigned have been appointed, by the council of the association, to secure competent judges in the arts and manufacturers department of the provincial exhibition, to be held in the city of Toronto, commencing on Tuesday, the 27th day of September next. The plan adopted three years ago, and which has been found to work very satisfactorily, is again proposed to be carried out, namely: to apply to mechanics apostrophe institutes to nominate certain of their members, or others, to act as judges in different classes of this department...