Reports of Select Committee on Telephone and Telegraph Wires (1885), of Select Committee on Telegraph Bill (1892), of Joint Committee of the House of Lords and the House of Commons on Electric Powers (Protective Clauses) (1893), of Select Committee on Telephone Service (1895), of Select Committee on Telephones (1898), and of Select Committee on Post Office (Telephone) Agreement (1905); Treasury Minutes (1892 and 1899); Annual Reports of the Postmaster-General; Report to the Treasury by Sheriff Andrew Jameson on Glasgow Telephone Enquiry (1897); H.
The bold criticism of Middleton's recently (174.9) published Free Enquiry into the Miraculous Powers which are supposed to have subsisted in the Christian Church appears to have given the first shock to his Protestantism, not indeed by destroying his previous belief that the gift of miraculous powers had continued to subsist in the church during the first four or five centuries of Christianity, but by convincing him that within the same period most of the leading doctrines of popery had been already introduced both in theory and in practice.
The results of these papers were embodied in the Enquiry into the Human Mind on the Principles of Common Sense (1764).
The Enquiry does not go beyond an analysis of sense perception, and is therefore more limited in scope than the later Essays; but if the latter are more mature, there is more freshness about the earlier work.
In the dedication of the Enquiry, he says: "The ingenious author of that treatise upon the principles of Locke - who was no sceptic - hath built a system of scepticism which leaves no ground to believe any one thing rather than its contrary.