Quarterly Journal of Microscopical Science, Volumes 88-89

abdominal segment acid adult advanced embryo amoeba anal segment animal antenna antennary apodeme apophyses appear appendages arise axostyle basal become blastoderm blue body cent centriole chilopods chitin collum segment colour contractile vacuole cytoplasm deutocerebrum Diplopoda dorsal ducts ectoderm elongate embryo end-sac endoderm enlarged epidermis epithelium evidence fat-body fibres filaments fixation flame-cells formation ganglia ganglion gastrula genital tube germ-band germ-cells gland glandular Golgi apparatus Golgi material granules head Heymons impregnation insects instar larva intestine larva lateral lipoid lobes Malpighian tubes mandibles mandibular maxillae maxillary median mesoderm membrane method mid-gut mitochondria myriapods nerve nerve-cord neuropilem nile blue nuclear nucleus observed oesophagus osmication osmium osmium tetroxide pair Pauropoda Pauropus Peripatus phase phosphatase plate posterior pre-antennary pre-mandibular pre-oral cavity present protocerebrum pupa secretory seen shown in fig somites stage stained stomodaeum structure sudan black surface Symphyla teloblastic tergal Text-fig thickening tissue vaginalis ventral organs wall yolk