e whole of the animal's body may be covered by the mantle. In structure, the mantle is normally rather thin, and there is only some connective tissue and a few muscular fibres between the internal and external layers of epithelium. In some i&\N cases the gonads may extend into the mantle : into… … FiQ. 187. the oxygen of the surrounding medium, Kdhja suhorbicuiaris, Jiontagu, aud is most conspicuous at thosc points without the si.eu ventral as],eet whcre the respiratory fluid enters the ad, posterior adductor ; o', mhalaut . r J orifice; o", pedal orifice ; o"', ex- pallial CaVlty. halant…
Color · Sight · Philosophy, German
Internet Archive · Robarts - University of Toronto · Public domain (published before 1931). Free to use for anything.
