Elements of Biology: A Practical Text-book Correlating Botany, Zoology, and Human Physiology

adapted alcohol American Book Company amount animal arteries bacteria bean beetle birds blood vessels bone Botany breathing called carbon dioxide cause cells cerebrum color colorless corpuscles containing corn corpuscles cotyledons covered crayfish developed dicotyledonous digestive eggs endosperm example experiment fibers fish flower fluid frog fruit germinate gills glands grain green grow growth heart heat Hunter and Valentine insects intestine kidney known laboratory large number larvæ layer leaf leaves legs living lungs Manual means membrane microscope mollusks monocotyledon mouth muscles muscular nerve nervous system nitrogen Notice organs outer ovary oxidation oxygen parasitic pass Physiology pistil pollen proteid protoplasm root hairs seedlings seeds seen shell side skeleton skin soil species sporangium spores stamens starch stem stomach stomata structure substance sugar surface teeth temperature tiny tion tissues tree veins vertebral vertebral column walls wings worm Zoology