"Those last two lines from the final chorus of Elfrida, (says Miss Seward), admirably close this tribute to the memory of him who stands second to Gray, as a lyric poet; whose English Garden is one of the happiest efforts of didactic verse, containing the purest elements of horticultural taste, dignified by freedom and virtue, rendered interesting by episode, and given in those energetic and undulating measures which render blank verse excellent; whose unowned satires, yet certainly his, the heroic epistle to Sir William Chambers, and its postscript, are at once original in their style, harmonious in their numbers, and pointed in their ridicule; whose tragedies are the only pathetic tragedies which have been written in our language upon the severe Greek model. The Samson Agonistes bears marks of a stronger, but also of an heavier hand, and is unquestionably less touching than the sweet Elfrida, and the sublime Caractacus." Mr. Mason, in 1756 published four Odes. "It would be difficult to say, (says the biographer of the annual Necrology of 1797,) which is most to be admired, the vividness of the conception, or the spirit of liberty, and the ardent love of independance throughout. The address to Milton in his Ode to Memory, and to Andrew Marvel, in that to Independance, cannot be too much admired. At the period when the Middlesex election was so much agitated, he united with those independant freeholders, who, by their declarations and petitions, throughout the nation, opposed corruption, and claimed a reform in parliament; and when the county of York assembled in 1779, he was of the committee, and had a great share in drawing up their spirited resolutions. The animated vindication of the conduct of the freeholders, and other papers, though printed anonimously in the newspapers, and so printed in Mr. Wyvill's collection of political tracts, in 3 vols. are well known to be Mr. Mason's production. This conduct rendered him obnoxious to the court party. He was at this time one of the king's chaplains, but when it became his turn to preach before the royal family, the queen appointed another person to supply his place. It has been observed, that his sentiments in a later period of his life, took a colour less favourable to liberty. Whether alarmed at the march of the French revolution, or from the timidity of age, we know not. His friend Horace Walpole, charges him with flat apostacy:" The _Heroic Epistle_ to Sir W. Chambers, and the _Heroic Postscript_, are now positively said to have been written by Mr. Mason. Mr. Thomas Warton observed, "they may have been written by Walpole, and buckramed by Mason."