6 Proceedings of Royal Society of Edinburgh. [sess. 
becoming a pioneer settler there. Circumstances, however, pre- 
vented the fulfilment of his wish at this time ; hut after a year or 
two spent in Canada, Mr Elder, who in the meantime had married 
Miss Jean Balfour, was able to accomplish his early intention, and 
sailed to Australia with his wife, where he joined the business 
already established in Adelaide, South Australia, by his elder 
brother, Mr Alexander Lang Elder, with whom in those days was 
associated the second brother, Mr William Elder. After five years 
of great commercial success he returned to his native land, and 
on the shores of the Clyde lived a secluded and thoughtful life. 
He was elected a Eellow of this Society in 1869, and died at 
Knock Castle, Largs, on 22nd July 1897. — ( Communicated by 
Mr Frederick Elder , 21 Cleveland Gardens , Hyde Park , London.) 
Professor Matthew Poster Heddle was a native of Orkney. 
He was appointed to the Chair of Chemistry in St Andrews Uni- 
versity in 1862, on the death of Professor Connell, whose assistant 
he was, and held the professorship till 1884, when he retired. He 
was widely known as a distinguished mineralogist, and was elected 
a Eellow of this Society in 1876, and was awarded the Keith 
Prize. He had been President of the Scottish Geological Society, 
and was a member of other learned bodies. He died on 19th 
November 1897, about 70 years of age. 
Mr Thomas Brumby Johnston was the son of Andrew John- 
ston, Penicuik, and Isobel, daughter of Archibald Keith, owner of 
Polton Paper Mill. He was born in Perth on the 28th January 
1814, and after being educated at several private schools in Edin- 
burgh, joined his brothers — the late Sir William Johnston and 
Alexander Keith Johnston, LL.D. — in the firm of W. & A. K. 
Johnston. In 1843 he married Jane, daughter of Thomas Kuddi- 
man, and last, it is believed, of the family of that eminent 
philologist and grammarian. In 1872 he published his Historical 
Geography of the Clans of Scotland , and was also the author of 
several other geographical works. He was a member of the 
Scottish Society of Antiquaries, who, in 1872, presented him with 
a handsome piece of plate as a token of their grateful estimation of 
his services to that Society. He was also a member of the Geo- 
graphical Societies of Edinburgh and London, and was elected a 
Eellow of this Society in 1867. He died on 2nd September 1897. 
