The Assassins' Castle of Lamiasar like a sailing vessel under canvas, so that it was hard not to slip off it now and then. Rustum Khan was taking us to see the casde of Qustinlar, which is on his land. It holds a command- ing position, and must have been built to guard or prevent communication with the Qazvin plain over the passes; but there is nothing left except the rudiments of an outer wall badly built of rough stones embedded in mortar, and enclosing a space about 800 by 50 feet. Having seen this, we left Rustum Khan, and came down by the cornstacks and threshing- floors of Qustin, and thence after four hours reached the rice- fields in the lowlands of the Shah Rud at Siahdasht. The bridge of Siahdasht and that of Shireh Kuh higher up were said to be the only ones not yet washed away, and the river was too full to ford so low down. The bridge was therefore important. Rustum Khan, however, had been giving us statistics of mules and muleteers drowned with the bridges they happened to be crossing. The new one is never built till the old one is swept away, which usually happens under the weight of the last muleteer, so that the crossing of bridges towards the end is rather like musical chairs when the music may stop at any moment. When Ismail saw what he had to get over, he was nervous, for the loose poles were shaking even under my weight alone; the mules were led after, separately and very reluctant; and Ismail wiped his fore- head and dianked several Imams when the strain was over. We were now in the region of mosquitoes. They buzzed about even by day, and it was impossible to escape. One could only take quinine and hope for the best. We found a garden, a little above the rice-fields and stagnant pools, and rested there in the company of a wandering tortoise, some village women, and an inquisitive, suspicious man. The garden was dark with fruit trees and deep grass; from its shade one looked down the glittering sunlit windings of the river whose [242]