“Having been twice at Perugia, I have experienced the double effect of Mount Ubaldo, which the poet says makes this city feel the cold and heat.
‘Onde Perugia sente freddo e caldo,’
that is, which by turns reflects upon it the rays of the sun, and sends it icy winds. I have but too well verified the justice of Dante’s observation, particularly as regards the cold temperature, which Perugia, when it is not burning hot, owes to Mount Ubaldo. I arrived in front of this city on a brilliant autumnal night, and had time to comment at leisure upon the winds of the Ubaldo, as I slowly climbed the winding road which leads to the gates of the city fortified by a Pope.”