Sir James Dewar (1842-1923)

by Rev. William Meiklejohn, M.A.


Page 13

Friday evening lectures at The Royal Institution in which he described the work which he and Dr J. G. McKenrick had done on the effect of light on the retina and optic nerve. The latter of the two lectures, says a distinguished scientist who was present, was "a remarkable tour de force exhibiting the facility of experimental resource and brilliance of demonstration which have been ever characteristic of Professor Dewar's lectures and rendered them so peculiarly attractive and instructive". His ability to communicate easily and lucidly not only with his compeers but with those less well versed in scientific matters allied to his brilliance as an experimental chemist fitted him admirably for the duties of his new appointment (note 17). He retained both chairs, spending part of the academic year in Cambridge and part in London. But it was to The Royal Institution that he devoted the lion's share of his time and it was there that he carried out the experiments which brought him world-wide fame. Working conditions at The Royal Institution were vastly superior to the cramped accommodation in Cambridge and when through the munificence of Dr Ludwig Mond, who purchased the adjoining house, No. 20 Albemarle Street, and had it altered to form the Davy-Faraday Laboratory James Dewar, who was appointed its first Director, was provided with superb facilities and ample scope for the exercise of his talents. The new laboratory was opened by The Prince of Wales on 22nd December 1896. Dr Ludwig Mond who was a close and admiring friend of Dewar provided also a lift to the Director's flat to which he himself was a frequent visitor. In 1887 James Dewar had been appointed Superintendent of the House and took up residence on the top floor in the rooms which had been occupied by Faraday,

"Great Faraday, who made the world so wise

And loved the labour better than the wage."

To a man of Dewar's sensitivity and who held Faraday in great reverence it must have been a thrilling and inspiring experience to have become the occupant of what was once Faraday's home. With a connoisseur's love of beauty he and his wife furnished their flat with fine tapestries, lovely Persian carpets, attractive paintings and engravings to which were being constantly added many objets d'art all of which reflected their exquisite taste. Here for thirty years they had their home which was a centre of generous hospitality to their large circle of friends and a salon where men of science and lovers of literature and the arts were always made welcome. As Superintendent of The Royal Institution he was responsible for directing and advising on research. Of a generous disposition, he was always ready to assist his colleagues and students, though he could be brusquely intolerant of shoddy work which he sometimes "damned with not too faint praise". If he had any fault it lay in his irascibility to which he occasionally gave expression too plainly and which was not helped by his proneness to insomnia. As is the case with most great men James Dewar was extremely modest. As a colleague remarked, "he was a man of incorrigible modesty". He never boasted of his achievements or rated his attainments highly and was anxious that others should not do so. "Every morning," we are told by one of his assistants, "James Dewar appeared in the laboratory at 10.30 prompt and kept his finger on all that happened day by day. He had a habit of humming more or less tunefully as he went about the building which gave the staff ample warning of his approach. Methodical in everything he did, he drew up a detailed code of rules for the guidance of those whom he called his working staff which all had to sign." Though an exacting master he had a magnetic personality and, says Ralph Cory, who served him for twenty-five years, and who became eventually the librarian of The Royal Institution, "there was something about him that far outweighed his occasional petulant outbursts and won the unqualified loyalty of his subordinates. When he was knighted I was given a crisp £5 note, enormous largesse in these days, with which to celebrate the honour in a fitting manner" (note 18). His principal assistant in the laboratory was a 'brither Scot', Robert Lennox and junior to him was Mr Heath, each of whom tragically lost an eye as the result of explosions during experiments at The Royal Institution. James Dewar's work there was marked by amazing productivity not in one department of scientific research alone but in several. Few scientists have equalled him either in the volume or in the wide ranging variety of his investigations.

The Royal Institution, founded by Count Rumford in 1799, was one of the earliest scientific research centres in Great Britain. As its Charter makes clear, although it was meant to encourage research it was also intended to be a vehicle for communicating these results... NEXT PAGE



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