The reduction of the thickness of the side walls of St. Stephen’s Chapel from three feet to one foot gave additional four feet to the width of the chamber. So soon as the wainscotting was removed, it was seen that the walls were adorned with beautiful paintings of scriptural and historical subjects. The discovery excited great interest, both on account of the antiquity of the paintings, which were found to date from Edward III., and the fact that they were painted in oils and were consequently among the earliest specimens of that class of painting. Smith obtained permission to copy them. He began work each morning, as soon as it was light, and was followed so closely by the workmen that they sometimes demolished in the afternoon the painting he had copied in the morning. This task occupied him for six weeks. These valuable drawings are engraved and coloured in the _Antiquities of Westminster_. [293] Edward Hussey Delaval (1729-1814) of Seaton-Delaval, Northumberland, the chemist, has a claim on the remembrance of Londoners. In 1769 he and Benjamin Franklin were commissioned to report to the Royal Society on the best means of protecting St. Paul’s from lightning. Parliament Stairs, where his house stood, was at the west end of the present Houses of Parliament, giving access to the river from Abingdon Street. Delaval, who traced his descent from the Conqueror’s standard-bearer at Hastings, died here, aged 85. [294] Parliament Stairs were open several months in the summer for the accommodation of those gentlemen of Westminster School, who practise the manly and healthy exercise of rowing; the key was held by Mr. Tyrwhitt, whose servants regularly opened and closed the gates night and morning.--S. [295] John Carter, F.R.S. (1748-1817), is airily described by Michael Bryan as “a harmless and inoffensive drudge.” He was employed by the Society of Antiquaries, and by Horace Walpole and others. His chief work, _The Ancient Architecture of England_, occupied him many years. Carter was enthusiastically musical, but the two operas on which he ventured are forgotten. [296] Richard Bentley, only son of Dr. Bentley, the Master of Trinity. He designed beautiful illustrations for Walpole’s _edition-de-luxe_ of six of Gray’s poems, including the _Elegy_, and gave much assistance in the architectural treatment of Strawberry Hill. Walpole was under no delusion about their joint experiments in Gothic. “Neither Mr. Bentley nor my workmen had _studied_ the science,” he wrote to Thomas Barrett (June 5, 1788); “my house therefore is but a sketch for beginners.”