The object of this work may be briefly stated to be: ( I ) To draw up a list, and if possible a complete list, of all the papers ever published which relate, either directly or indirectly, to the brain, cranial and spino-occipital nerves, spinal cord and spinal nerves, the sympathetic, and lateral sense organs of fishes and amphibia. All papers, whether morphological, anatomical, physiological and embryological, and whether they directly fall within the scope of the bibliography, or only have

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... incidental connection with it, and whether further they are complete or only preliminary, will be recorded in such a way as to make, it is hoped, confusion on the part of a librarian or author a matter of some difficulty. The brain will include the hypophysis but not the epiphysis, and the nose, eye, and ear, will also be omitted. (2) To intimate in each case the type or types described and figured by the author, to reduce such names to their correct synonomy, and to index the whole at the end with crossreferences to the old terms. (3) To give full information as to preliminary notices, abstracts, unaltered reprints, translations, etc., so as to obviate the necessity of a worker looking up the same paper in sometimes as many as six forms. (4) To give at least some idea of the contents and scope of each paper and references to all principal criticisms passed upon it. ( 5 ) For the convenience of British students to indicate where the rarer works and journals may be found in the London libraries. University Colltge, Liverpool.