(notes edited by John McGivering and John Radcliffe)
'O heaven, O earth, bear witness to this sound...'larynx Colloquially known as the "voice box", it houses the vocal chords within the throat, an essential component of voice-production. .
Smells are surer than sounds or sights'from Castor in the Forum to Mars without the wall' i.e. 'All the way rrom the city centre to its boundaries'. This is a quotation from one of the Lays of Ancient Rome by Lord Macaulay, politician, historian and poet (1800-1859), "A Lay Sung at the Feast of Castor and Pollux on the Ides of Quintilis in the year of the City CCCCLI".
To make your heart-strings crack.