(Fig 1, page 350) A manganese nodule in the top part of the CHUBASCO station 17 core taken in the Pacific Ocean

The vast extent of pelagic deposits, covering about 70 per cent of the ocean floor, thus about half of the earth, makes them of obvious importance to all Earth Science. All the pelagic (eupelagic) sediments, whether largely of plankton remains or fine inorganic particles, have certain distinctive characteristics to reflect their environment of accumulation. The great segregation of manganese in pelagic sediments presents many problems. It is hypothesized that in the formation of present day nodules a relatively slow accumulation in order to permit deposition of more of the manganese as large nodules, rather than as the disseminated micronodules that are in larger proportion in the Tertiary.

Bibliographies on nursing; books, pamphlets, articles, audio-visual materials.

A replacement for, rather than an addition to, the bibliographies of the former National Organization for Public Health Nursing, the National League of Nursing Education, 1952, and the National League for Nursing, 1954-55.

Bibliographies on nursing; books, pamphlets, articles, audio-visual aids.

Vol. 5 issued by the National League for Nursing, Division of Nursing Education.

A record of books & letters,

Supplement: Items ... acquired too late for insertion in Mr. Arnold's Catalogue of American first editions": p. 105-106.