. The microscope and its revelations. IC FORMS OF ANIMAL LIFE the light; and its tail-like appendagCj whose length .-iliout equalsits own diameter, and which serves as an instrument of locomotion,may be discerned with a hand-magnifier. The form of Xoctiluca, isnearly that of a sphere, so compressed that while 011 one aspect (;87, A) its outline when projected on a plane is nearly circular, itis irregularly oval in the aspect (B) at right angles to this. Alongone side of this body is a meridional groove, resembling that of apeach ; and this leads at one end into a deep depression of the
. The microscope and its revelations. IC FORMS OF ANIMAL LIFE the light; and its tail-like appendagCj whose length .-iliout equalsits own diameter, and which serves as an instrument of locomotion,may be discerned with a hand-magnifier. The form of Xoctiluca, isnearly that of a sphere, so compressed that while 011 one aspect (;87, A) its outline when projected on a plane is nearly circular, itis irregularly oval in the aspect (B) at right angles to this. Alongone side of this body is a meridional groove, resembling that of apeach ; and this leads at one end into a deep depression of the sur-face a. termed the atrium, from the shallower commencement ofwhich the tentacle, d,1 originates ; whilst it deepens down at the baseof the tentacle to the mouth, e. Along the opposite meridian then-extends a slightly elevated ridge, c. which commences with theappearance of a bifurcation at the end of the atrium farthest from B :• ••-::.:, \*&^\ >%^C%•••:,- i$:;:^i§lli5^?-:^:: ••• /A A \ •••.,: •. FIG. 587.—Noctilt/c/i miliaris as seen at A on the aboral side, and atB on a plane at right angles to it: a, entrance to atrium ; I/, atrium ;a, superficial ridge; d, tentacle; e, mouth leading to oesophagus,within which are seen the flagellum springing from its base, and thetooth-like process projecting into it from above ;/, broad process fromthe central protoplasmic mass proceeding to superficial ridge; g,duplicature of wall; h, nucleus. (Magnified about Hit diameters.) the tentacle : this is of firmer consistence than the rest of the body,and has somewhat the appearance of a rod imbedded in its mouth opens into a short (esophagus, which leads directly downto the great central protoplasmic mass ; on the side of this canal,farthest from the tentacle, is a firm ridge that forms a tooth-likeprojection into its cavity; whilst from its Hoor there arises a long The organ here termed tentacle is commonly designated ffiifjel/iun ; whilewhat is
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
