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Vol. 48: Part I. 



MEMOIRS AND PROCEEDINGS 



OF 



THE MANCHESTER 

 LITERARY & PHILOSOPHICAL 



SOCIETY. 



1903-1904. 



CONTENTS. 



Memoirs : 



I. On the Resolution of Elementary Substances into their 

 Ultimates and on the Spontaneous Molecular 

 Activity of Radium. By Henry Wilde, D.Sc, 

 F.R.S. PVz^k two Tables . - . . . pp. t — J2. 



II. Notes on Fossil Plants from the Ardwick Series of 

 Manchester. By E. A. Newell Arber, M.A., 

 F.L.S., F.G.'S. Plate i. pp. i — 32. 



III. On a Method of Ice Calorimetry. By H. E. Schmitz, 



M.A., B.Sc. - - - pp. 1—20. 



IV. Suggestions for a Revision of the Classification of 



the Polyclad Turbellaria. By F". F. Laidlaw, B.A. pp. i— 16. 



MANCHESTER: 



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