Lecture on The Ear Two coloured drawings showing the anatomy of the human ear. Presumably used to illustrate Lockhart's 'Lecture on the Ear.' Three audio tapes of Lockhart delivering his lecture on 'The Ear.' These recordings were made by the British Universities Film and Video Council in 1988, from an original recording, which is now lost. The date of delivery is not known. 'The Toast of the Ladies: A Reply' is also recorded on the tapes. The date of delivery is not known. n.d.