79.—Baillon, Henry E. The natural history of plants; transl. by Marcus M. Hartog. Illus. 8v. la. 8o. 1871-88
This work should neither be placed under “Natural History” nor “Plants,” as some might suppose, as its subject is “Botany,” and the further entries would therefore be
Botany:
Baillon, H. E. The natural history of plants. 8v. 1871-88.
Plants. See Botany.
Hartog, Marcus M. (Transl.) See Baillon, H. E.
Besides the curtailment of information given in the principal entry already shown, the Christian names of authors are reduced to simple initials, and the names of translators and editors are omitted in all sub-entries. It is important to notice the difference between “See” and “See also” in cross-references; the first would prevent any entries being placed under the subject-heading where it is given, as already stated, but the second is intended to guide to lesser or closely-related divisions of the subject under which it appears. There may be a number of these see alsos under a single heading by the time the catalogue is ready for printing, when they are to be embodied into one entry, as in the following illustration, where nine are so amalgamated
Botany.
See also Algæ. Cryptogamia. Ferns. Flowers. Fungi. Grasses. Lichens. Mosses. Trees.
Of course, references of any kind must never be made in anticipation, but at the moment when the book to which they refer is being catalogued; otherwise a series of references will be the result that lead nowhere, as would be the case in the above example if the library had no books upon Algæ or the other subjects named.