s very faithfully,

ALFRED R. WALLACE.

* * * * *

The British Association met in Dublin in 1878, and Prof. Barrett asked
Wallace to stay with him at Kingstown, or, if he preferred being nearer
the meetings, with a friend in Dublin. Earlier in the year Mr. Huggins,
afterwards Sir W. Huggins, O.M. and President of the Royal Society, had
sent Prof. Barrett a very beautifully executed drawing of the knots tied
in an endless cord during the remarkable sittings Prof. Zoellner had with
the medium Slade. Sir W. Huggins invited Prof. Barrett to come and see
him at his observatory at Tulse Hill, near London, and there he met
Wallace and discussed the whole matter. It may not be generally known
that so careful and accurate an observer as Sir W. Huggins was convinced
of the genuineness of the phenomena he had witnessed with Lord Dunraven
and others through the medium D.D. Home. He informed Prof. Barrett of
this himself.

TO PROF. BARRETT

_Waldron Edge, Duppas Hill, Croydon. June 27, 1873._

My dear Barrett,--The receipt of a British Association circular reminds
me of your kind invitation to stay with you or your friend at Dublin,
and as you may be wishing soon to make your arrangements I write at once
to let you know that, much to my regret, I shall not be able to come to
Dublin this year. Since I met you at Mr. Huggins's I have done nothing
myself in Spiritual investigations, but have been exceedingly interested
in the knot-tying experiment of Prof. Zoellner and the weight-varying
experiments of the Spiritualists' Association. I do not see what flaw
can be found in either of them....--Yours very faithfully,

ALFRED R. WALLACE.

* * * * *

In the discussion on Prof. Barrett's paper at the Glasgow Meeting of the
British Association, which took place in the London _Times_ and other
newspapers, instances of apparent thought-transference were given by
many correspondents. Each of these cases Prof. Barrett investigated
personally, and one of them led to a remarkable series of experiments
which he conducted at Buxton, with the result that no doubt was left on
his mind of the fact of the transference of ideas from one mind to
another independent of the ordinary channels of sense. He asked Prof.
and Mrs. H. Sidgwick to come to Buxton and repeat his experiments with
the subjects there--daughters of a local clergyman. They did so, and
though they had less success