Sentence:  Notwithstanding the repeated proclamations of successive magistrates against depositing filth on the streets and closes, and against throwing soil and refuse over the windows, – emphasised as these proclamations were by threats of fines, imprisonment, the pillory, whipping, and banishment, – the practice was continued far into the last century; and contemporary writers represent the sounding of ten o'clock from the steeple of St Giles' to have been the signal for a general and simultaneous discharge from the windows of every house, amid a chorus of "<WSD>"Gardyloos</WSD>"." 
Meaning of the word marked with <WSD> tags:  A cry of "gardyloo".