I. The systematic position and importance of the foraminifera.- II. The living organism.- III. The test.- IV. Benthonic foraminifera in normal marine waters.- V. Benthonic foraminifera of brackish, hypersaline, ultrasaline, and fresh waters.- VI. Benthonic foraminifera of marshes, mangrove swamps and lagoons.- VII. Planktonic foraminifera.- VIII. Classification.- IX. Ecology.- X. Collection of material.- XI. Preparation of samples.- XII. Separation of the foraminifera from the sediment.- XIII. Taxonomic determination.- XIV. Faunal studies and their application.- XV. Foraminiferal cultures.- XVI. Storage of samples and specimens.- XVII. Synonymy and illustration.- XVIII. Unresolved problems.- Index of genera and species.- Index of authors.- Index of subjects.