The Cambridge natural history, Vol. 04 (of 10)

THE
                       CAMBRIDGE NATURAL HISTORY


                               EDITED BY

  S. F. HARMER, Sc.D., F.R.S., Fellow of King’s College, Cambridge;
      Keeper of the Department of Zoology in the British Museum (Natural
      History)

                                  AND

  A. E. SHIPLEY, M.A., Fellow and Tutor of Christ’s College, Cambridge;
      Reader in Zoology in the University


                               VOLUME IV




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CRUSTACEA


      By GEOFFREY SMITH, M.A. (Oxon.), Fellow of New College, Oxford;
      and the late W. F. R. WELDON, M.A. (D.Sc., Oxon.), formerly Fellow
      of St. John’s College, Cambridge, and Linacre Professor of Human
      and Comparative Anatomy, Oxford


TRILOBITES


      By HENRY WOODS, M.A., St. John’s College, Cambridge; University
      Lecturer in Palaeozoology


INTRODUCTION TO ARACHNIDA, AND KING-CRABS


      By A. E. SHIPLEY, M.A., F.R.S., Fellow and Tutor of Christ’s
      College, Cambridge; Reader in Zoology


EURYPTERIDA


      By HENRY WOODS, M.A., St. John’s College, Cambridge; University
      Lecturer in Palaeozoology


SCORPIONS, SPIDERS, MITES, TICKS, ETC.


      By CECIL WARBURTON, M.A., Christ’s College, Cambridge; Zoologist
      to the Royal Agricultural Society


TARDIGRADA (WATER-BEARS)


      By A. E. SHIPLEY, M.A., F.R.S., Fellow and Tutor of Christ’s
      College, Cambridge; Reader in Zoology


PENTASTOMIDA


      By A. E. SHIPLEY, M.A., F.R.S., Fellow and Tutor of Christ’s
      College, Cambridge; Reader in Zoology


PYCNOGONIDA


      By D’ARCY W. THOMPSON, C.B., M.A., Trinity College, Cambridge;
      Professor of Natural History in University College, Dundee


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                                  1909




  All the ingenious men, and all the scientific men, and all the
  fanciful men, in the world, with all the old German bogypainters into
  the bargain, could never invent ... anything so curious, and so
  ridiculous, as a lobster.

                                   CHARLES KINGSLEY, _The Water-Babies_.

        For, Spider, thou art like the poet poor,
            Whom thou hast help’d in song.
        Both busily, our needful food to win,
            We work, as Nature taught, with ceaseless pains,
                Thy bowels thou dost spin,
                    I spin my brains.
                                        SOUTHEY, _To a Spider_.

        Last o’er the field the Mite enormous swims,
        Swells his red heart, and writhes his giant limbs.
                        ERASMUS DARWIN, _The Temple of Nature_.




                                PREFACE


The Editors feel that they owe an apology and some explanation to the
readers of _The Cambridge Natural History_ for the delay which has
occurred in the issue of this, the fourth in proper order, but the last
to appear of the ten volumes which compose the work. The delay has been
due principally to the untimely death of Professor W. F. E. Weldon, who
had undertaken to write the Section on the Crustacea. The Chapter on the
Branchiopoda is all he actually left ready for publication, but it gives
an indication of the thorough way in which he had intended to treat his
subject. He had, however, superintended the preparation of a number of
beautiful illustrations, which show that he had determined to use, in
the main, first-hand knowledge. Many of these figures have been
incorporated in the article by Mr. Geoffrey Smith, to whom the Editors
wish to express their thanks for taking up, almost at a moment’s notice,
the task which had dropped from his teacher’s hand.

A further apology is due to the other contributors to this volume. Their
contributions have been in type for many years, and owing to the
inevitable delays indicated above they have been called upon to make old
articles new, ever an ungrateful labour.

The appearance of this volume completes the work the Editors embarked on
some sixteen years ago. It coincides with the cessation of an almost
daily intercourse since the time when they “came up” to Cambridge as
freshmen in 1880.

                                                          S. F. HARMER.
                                                          A. E. SHIPLEY.


  _March 1909._




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