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PREFACE.
The Historical Society of Science is indebted to J. H. C. Wright, Esq., of St. John's College, Cambridge, for the transcripts of several of the letters contained in this volume, which were most kindly presented to the Society by that gentleman, whose zeal and knowledge of science and its history are deserving of the highest praise.
J. O. HALLIWELL.
35, Alfred Place, Jan. 15, 1841.