A Course of Elementary Instruction in Practical Biology |
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Page 4
... close the eye . As is well known , Frogs emit a peculiar croaking sound , their vocal powers being more especially manifested in the breeding season , when they collect together at the surface of ponds , pools and sluggish streams , in ...
... close the eye . As is well known , Frogs emit a peculiar croaking sound , their vocal powers being more especially manifested in the breeding season , when they collect together at the surface of ponds , pools and sluggish streams , in ...
Page 9
... close to the angle of the gape below and in front of the Eustachian recesses . In the middle of the back of the throat is the opening of the cesophagus , closed by the approximation of its sides except during deglutition , while in the ...
... close to the angle of the gape below and in front of the Eustachian recesses . In the middle of the back of the throat is the opening of the cesophagus , closed by the approximation of its sides except during deglutition , while in the ...
Page 14
... close to its growing extremities . As the bone grows , the superadded sheath invades the middle of the cartilage and more or less replaces it ; while the terminal portions of cartilage continue to grow and enlarge , and the calcareous ...
... close to its growing extremities . As the bone grows , the superadded sheath invades the middle of the cartilage and more or less replaces it ; while the terminal portions of cartilage continue to grow and enlarge , and the calcareous ...
Page 24
... close together , by openings which are situated in the dorsal wall of the cloaca immediately in front of the apertures of the ureters . Remnants of the oviducts are usually pre- sent in the male . Each ovum , when ripe , consists of a ...
... close together , by openings which are situated in the dorsal wall of the cloaca immediately in front of the apertures of the ureters . Remnants of the oviducts are usually pre- sent in the male . Each ovum , when ripe , consists of a ...
Page 29
... close to the middle line . Each then unites so closely with the Gasserian ganglion and with the orbito - nasal division . of the fifth as to appear to be only a subdivision of the latter . Its fibres are distributed to the external ...
... close to the middle line . Each then unites so closely with the Gasserian ganglion and with the orbito - nasal division . of the fifth as to appear to be only a subdivision of the latter . Its fibres are distributed to the external ...
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Common terms and phrases
acid alimentary canal animal aperture appendages arising artery Assistant Master attached auditory axis blastopore blood body body-wall branches Cambridge Canada balsam cavity cell-wall cells chamber chitinous chlorophyll chromatophores cilia College colour commissures containing corpuscles Crayfish delicate dissect dorsal duct ELEMENTARY elongated epidermis epithelium Examine excretory exoskeleton external Fcap fibres filaments fluid Frog front ganglia ganglion genital germinal vesicle gills gland granular high power hypha Illustrated immediately inner integument intestine lateral layer lobes longitudinal low power lying mass maxilla median membrane middle line mouth muscular nematocysts nerve Note nucleus organs orifice outer oval ovum pair passing pericardium pigmented portion posterior Prof Professor Protococcus protoplasm Remove revised round Sect seen segment setæ side solution somite spinal Spirogyra sporangium spores stained structure surface terminal thickened thin tissue Torula transverse section trunk tube vacuole valves veins ventral ventricle vessels wall xylem
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