COVER -- CONTENTS -- CHARACTERS AND CLASSIFICATION OF NON-CHORDATES -- STUDY OF MUSEUM SPECIMENS AND SLIDES OF DIFFERENT INVERTEBRATE PHYLA -- CURIOS IN INVERTEBRATE ZOOLOGY -- MINOR AND MAJOR DISSECTIONS -- PREPARATION OF IMPORTANT FIXATIVES, STAINS AND OTHER REAGENTS -- GENERAL PROCEDURE OF MICROSCOPIC PREPARATIONS -- INVERTEBRATES CULTURE METHODS -- PERMANENT STAINED SLIDES OF MINOR DISSECTIONS - SLIDE PREPARATION -- EXPERIMENTAL CYTOLOGY AND GENETICS -- BEHAVIOUR EXERCISES -- EXPERIMENTAL ECOLOGY -- BIOMETRY [BIOSTATISTICS].