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167

Mr. A. Cayley on the Theory of the Analytical Forms called

Trees ...

.. 172

Prof. Sedgwick’s Remarks on a passage in the President's Ad-

dress delivered at the Anniversary Meeting of the Geological

Society of London on the 15th of February, 1856 ..

176

Dr. Atkinson's Chemical Notices from Foreign Journals. 183

The Rev. G. Salmon on the Problem of the In-and circum-

scribed Triangle....

190

Mr. C. W. Vincent on certain Double Compounds of Ammonia

and Chromium

191

Proceedings of the Royal Society.

194

Geological Society

209

Cambridge Philosophical Society.. 215

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