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Royal Microscopical Society. 
His knowledge of antiquities was very considerable, and be 
possessed a remarkable collection of sulphur casts of coins and 
medals made with his own hands. One of his last acts was to 
attend the Oriental Conference held in London last year, to which 
he had intended to contribute a paper, but the fatigue of moving 
with the Astronomical Society from Somerset to Burlington House 
prevented its completion. He died of heart disease on December 3, 
1874, in the seventy-eighth year of his age, surviving his wife, to 
whom he was deeply attached, after a union of fifty-two years, by 
only twenty-three days. He was buried at Highgate Cemetery. 
Mr. Thomas William Burr was born July 10, 1821, and 
educated at a private school at Margate. In early youth he evinced 
a love of chemistry, which he studied for many years. At the age 
of sixteen he was articled to a solicitor, and at twenty-one he was 
admitted to practice. In 1845 he married Mary Anne, second 
daughter of the late Robert Greenwood, solicitor, formerly of 
Lancaster, who entered warmly into his scientific pursuits. At the 
age of twenty-five he took up the study of astronomy, which be- 
came from that time his favourite pursuit. In May, 1853, he was 
elected a Fellow of the Royal Astronomical Society, and in January, 
1854, he became a member of the Microscopical Society. He also 
joined the Chemical Society, and soon after its formation the 
Quekett Club, of which he became a Vice-President. His connec- 
tion with these Societies continued to the time of his death. As a 
council member of the Royal Astronomical and Royal Microscopical 
Societies he was highly esteemed, and rendered important services 
to the latter in gratuitously undertaking the legal business con- 
nected with obtaining its Royal Charter. 
Mr. Burr was an ardent supporter of scientific education, which 
he promoted by many excellent lectures, and by papers in the 
‘ Intellectual Observer,’ and other periodicals. For several years he 
had an observatory at Highbury, in which was mounted one of 
the finest equatorial telescopes by the late Andrew Ross. He 
exerted himself usefully in promoting a taste for microscopical 
pursuits, and was always ready to help young students over their 
difficulties by placing his scientific knowledge and experience at 
their disposal. He died on May 22, 1874, at St. John’s Park, 
Upper Holloway. 
Frederick Henry Leaf, son of William Leaf, head of the well- 
known firm William Leaf and Sons, was one of the founders of the 
Old Change Microscopical Society, which gave a valuable stimulus 
to the cultivation of science by men of business in their leisure 
hours, and has acquired an honourable position amongst popular 
scientific bodies. He was elected in November, 1866, and died on 
October 23, 1874, at the early age of forty-seven. 
R. W. Skeffington Lutwidge, M.A., was an acquaintance and 
