A Course of Practical Instruction in Elementary Biology

abdominal acid adductor animal antheridia antherozooids aortic arch aperture appendages artery attached axis become blood body bone branches canal carbonic anhydride cartilage cavity cells chamber chlorophyll cilia cloaca colour conidia containing cord Crown 8vo dissect divided division dorsal edge Edition elongated epidermis examine exoskeleton external fcap fibres filaments fluid free end Frog front ganglia ganglion gills give rise granular heart high power Hydra hypha hyphæ inch obj inner integument internodes intestine layer limbs lobes Lobster mass maxillæ median membrane middle line mouth muscles nerve Note nucleus organs outer oval pair papillæ passes pericardium peristome plant pollen-tube posterior end prothallus Protococcus protoplasm rectus internus rounded running seen side sinus skull solution somites specimens spinal sporangia sporangium spores stem stomach structure surface terminal thick thin tissue Torula transverse section trunk tube urostyle valves vein ventral ventricle vertebral vertebral column vessels Vorticella walls