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XXVI. 0 /z the apparent magnetism of Metallic Titanium. By 
William Hyde Wollaston, M. D. V. P. R. S. 
Read June 19, 1823. 
Xn an account that I lately gave of the properties of metallic 
Titanium, which is printed in the First Part of the Volume of 
the Philosophical Transactions for the present year, there is an 
oversight, which I am desirous of rectifying as soon as may 
be. I have there stated that the cubic crystals of Titanium, 
when first detached from the iron-slag where they are found, 
were all attracted by a magnet, but that when they had been 
freed from all particles of iron adherent to them, they appeared 
to be no longer acted upon by it. 
Having since that time been led by the observations of M. 
Peschier of Geneva, to examine this question more accu- 
rately, I find that, although the crystals are not sufficiently 
attractile to be wholly supported by the magnet, yet when 
a crystal is supported by a fine thread, the force of attraction 
is sufficient to draw it about 20 degrees from the perpen- 
dicular, and consequently, that the force of attraction is equal 
to about one- third the weight of the metal. 
When a piece of soft iron of about the same size was made 
of a cubic form ( weighing half a grain ) , the attractive force 
of the iron to the same magnet was found, in successive trials, 
to lift from eighty to ninety times its weight of a silver chain 
adapted to this inquiry. 
