of India owed much."

[46] Yule's colour-blindness was one of the cases in which Dalton, the
original investigator of this optical defect, took special interest.
At a later date (1859) he sent Yule, through Professor Wilson, skeins
of coloured silks to name. Yule's elder brother Robert had the same
peculiarity of sight, and it was also present in two earlier and two
later generations of their mother's family--making five generations in
all. But in no case did it pass from parent to child, always passing
in these examples, by a sort of Knight's move, from uncle to nephew.
Another peculiarity of Yule's more difficult to describe was the
instinctive association of certain architectural forms or images with
the days of the week. He once, and once only (in 1843), met another
person, a lady who was a perfect stranger, with the same peculiarity.
About 1878-79 he contributed some notes on this obscure subject to one
of the newspapers, in connection with the researches of Mr. Francis
Galton, on Visualisation, but the particulars are not now accessible.

[47] From Yule's verses on her grave.

[48] Lord Canning to Lady Clanricarde: Letter dated Barrackpoor, 19th Nov.
1861, 7 A.M., printed in _Two Noble Lives_, by A. J. C. Hare, and here
reproduced by Mr. Hare's permission.

[49] Lord Canning's letter to Lady Clanricarde. He gave to Yule Lady
Canning's own silver drinking-cup, which she had constantly used. It
is carefully treasured, with other Canning and Dalhousie relics, by
the present writer.

[50] Many years later Yule wrote of Lord Canning as follows: "He had his
defects, no doubt. He had not at first that entire grasp of the
situation that was wanted at such a time of crisis. But there is a
virtue which in these days seems unknown to Parliamentary statesmen in
England--Magnanimity. Lord Canning was an English statesman, and he
was surpassingly magnanimous. There is another virtue which in Holy
Writ is taken as the type and sum of all righteousness--Justice--and
he was eminently just. The misuse of special powers granted early in
the Mutiny called for Lord Canning's interference, and the consequence
was a flood of savage abuse; the violence and bitterness of which it
is now hard to realise." (_Quarterly Review_, April, 1883, p. 306.)

[51] During the next ten years Yule continued to visit London annually for