MACLAURIN'S THEOREM: see TAYLOR'S THEOREM. MACLEAN, SIR DONALD ( ,1_64-1932), British politi cian, the eldest son of John Maclean of Kilmoluag, Tiree, Scot land, was admitted a solicitor in 1887. After three unsuccessful contests, he entered the House of Commons in 1906 as Liberal member for Bath. He failed to hold his seat at the general election of Jan. 1910, but in December of that year he 'was elected for Peebles and Selkirk, which he represented until 1918. He was member for Peebles and South Midlothian from 1918 to 1922, when he lost his seat. In the absence of Asquith from the House of Commons, he became chairman of the Parliamentary Liberal party (1919-22). He was deputy chairman, House of Commons, 1911-18, and chairman of the London Appeal Tribunal, 1916-18. During the World War he was chairman of the Enemy Debt treasury commission and of the House of Commons military appeal tribunal. He was sworn of the privy council in 1916, and created K.B.E. in 1917. He died June 15,1932.
from the district which included Cincinnati, and in 1814 was re elected. In 1816 he was appointed a judge in the supreme court of Ohio, which position he resigned in 1822 to become commis sioner of the General Land Office under President Monroe. Mon roe in 1823 appointed him postmaster-general, in which office he continued throughout the administrations of John Quincy Adams. His conduct of this office was notable for its efficiency and econ omy, and for the strict non-partisan treatment of postmasters and other employees. President Jackson continued McLean in office, but McLean refused to accept the president's views on patronage, and resigned. Jackson thereupon appointed him an associate jus tice of the Supreme Court, which position he held from 1830 until his death in 1861. His career on the bench was long and distin guished, his most famous decision. perhaps, being the dissenting opinion in the Dred Scott case. In 1848 he was considered as a presidential candidate at the Free Soil convention in Buffalo, and in 1856 he was the chief opponent of J. C. Fremont at the first Republican convention, receiving 596 votes. He received a number of votes in the Chicago convention which nominated Lincoln. His death occurred at Cincinnati on April 4, 1861.