Produced by Sonya Schermann and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Transcriber’s Note When italics were used in the original book, the corresponding text has been surrounded by _underscores_ Mixed fractions have been displayed with a hyphen between whole number and fraction for clarity. Superscripted characters are preceded by ^ and when more than one character is superscripted, they are surrounded by {}. Some corrections have been made to the printed text. These are listed in a second transcriber’s note at the end of the text. ON MOLECULAR AND MICROSCOPIC SCIENCE VOLUME THE SECOND LONDON: PRINTED BY SPOTTISWOODE AND CO., NEW-STREET SQUARE AND PARLIAMENT STREET _Fig. 118, p. 107._ [Illustration: GALEOLARIA LUTEA.] [_Frontispiece to Vol. II._ ON MOLECULAR AND MICROSCOPIC SCIENCE BY MARY SOMERVILLE AUTHOR OF ‘THE MECHANISM OF THE HEAVENS’ ‘PHYSICAL GEOGRAPHY’ ‘CONNECTION OF THE PHYSICAL SCIENCES’ ETC. _Deus magnus in magnis, maximus in minimis_—St. Augustine IN TWO VOLUMES—VOL. II. WITH ILLUSTRATIONS LONDON JOHN MURRAY, ALBEMARLE STREET 1869 _The right of translation is reserved_ CONTENTS OF THE SECOND VOLUME. PART III. ANIMAL ORGANISMS. SECT. PAGE I. FUNCTIONS OF THE ANIMAL FRAME 1 II. PROTOZOA 13 III. HYDROZOA ZOOPHYTES 81 IV. ANTHOZOA ZOOPHYTES 119 V. ANNULOSA, OR WORMS 144 VI. ECHINODERMATA 169 VII. THE CRUSTACEA 188 VIII. CIRRIPEDIA 213 IX. BRYOZOA, OR POLYZOA 218 X. TUNICATA, OR ASCIDIANS 222 XI. MOLLUSCA 229 INDEX 253