...Between them was a stand of ivory, some two feet high, whose top was a disk, cut from the largest tusk that ever could have been... 
Talbot Mundy 「King--of the Khyber Rifles」
...On the disk resting in a little hollow in the ivory, was a pure, perfect crystal sphere of a foot diameter...
Talbot Mundy 「King--of the Khyber Rifles」
...Shell univalve, greatly depressed, broad, ear-shaped, the disk with many perforations...
William Swainson 「Zoological Illustrations, Volume II」
...It is nevertheless capable of a very limited degree ofmotion, by means of the expansion and contraction of this foot-like disk...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The prominenceof the disk in this group of Jelly-fishes is well characterized by theirGerman name, "Scheiben quallen," viz...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The ovariesare formed by four pendent pouches, placed near the sides of the mouth, andattached to four cavities within the disk...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...It is quitetransparent, as may be seen in , where all the fine ramifications ofthe chymiferous tubes as well as the ovaries, are seen through the vault ofthe disk...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...() This little Medusa is ofa dark yellowish color with brownish ocellated spots, scattered profuselyover the upper part of the disk...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...These lines ofjuncture between the two floors, where the partitions occur, produce thefour radiating lines, running from the proboscis to the margin of the disk,on the upper surface...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...When first hatched, like the Oceania, it is very convex, almostthimble-shaped (see ), but a little later the disk flattens andbecomes more open, as in ...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...Instead of countless tubes diverging from thedigestive cavity to the margin of the disk, as in the Zygodactyla, thereare but four...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...In the Tima they start from the end of the proboscis,as may be seen in the wood-cut (), and then turn abruptly off, whenthey arrive at the under surface of the disk, to reach its margin...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The madreporic body is situated on the uppersurface of the disk (), at the angle between two of the arms, and consequentlybetween two of the ambulacra, and opposite the odd one...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The disk of the Cribrella is smooth, instead of being covered, like thelarger Star-fishes, with a variety of prominent appendages...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...They differ from the Star-fishes in having the disk entirely distinct fromthe arms; that is, the arms, instead of merging gradually into the disk,start at once from its margin...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
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