...As for the medullary cord of theabdomen, it consists, as in the larva, of eight ganglia... 
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...B In the middle of the germinal disk we find the medullary groove(mr), and underneath it the chorda (ch)...
Ernst Haeckel 「The Evolution of Man」
...F Theprovertebræ (w) begin to grow round the medullary tube (mr) andthe chorda (ch): the gut (d) is cut off from the umbilicalvesicle (nb)...
Ernst Haeckel 「The Evolution of Man」
...The oval shield in the centre also looks whitish, and in itsaxis we see the dark medullary groove...
Ernst Haeckel 「The Evolution of Man」
...The two paralleldorsal or medullary swellings that enclose it growtogether over it afterwards, and form the medullary tube...
Ernst Haeckel 「The Evolution of Man」
...129 ne), from the medullary tube (sp) to the gastrictube (pag)...
Ernst Haeckel 「The Evolution of Man」
...The prorenal duct isvisible in this gap even at the time of the severance of the medullary tubefrom the horn-plate...
Ernst Haeckel 「The Evolution of Man」
...mr medullary tube, ch chorda...
Ernst Haeckel 「The Evolution of Man」
...mp medullary plates...
Ernst Haeckel 「The Evolution of Man」
...On its dorsal side we find in themiddle line the straight medullary furrow, bordered by the two parallel dorsalor medullary swellings...
Ernst Haeckel 「The Evolution of Man」
...At the same time, the neural ormedullary tube is formed above the chorda, on the dorsal surface, by theclosing of the parallel medullary swellings...
Ernst Haeckel 「The Evolution of Man」
...A groove orfurrow (the medullary groove) is sunk in the middle line of the flat surface,and two parallel longitudinal swellings arise on either side from the skinlayer...
Ernst Haeckel 「The Evolution of Man」
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