. Journal of comparative neurology . PLATE 3 EXPLANATION OF FIGURES 5 Reconstruction of Stage XXI; age 120| hours; length mm.; shading andabbreviations as in figure 1. In this stage the supra-orbital, infra-orbital andmandibular lines have grown forward almost to the optic vesicle. The epibran-chial placode has reached nearly its maximum size and projects into the meso-derm, but its point of attachment is not shown in this plot. In the postauditoryregion there are three lateral line primordia, one over the first gill, one over thesecond gill thickening and a third beginning over the third
. Journal of comparative neurology . PLATE 3 EXPLANATION OF FIGURES 5 Reconstruction of Stage XXI; age 120| hours; length mm.; shading andabbreviations as in figure 1. In this stage the supra-orbital, infra-orbital andmandibular lines have grown forward almost to the optic vesicle. The epibran-chial placode has reached nearly its maximum size and projects into the meso-derm, but its point of attachment is not shown in this plot. In the postauditoryregion there are three lateral line primordia, one over the first gill, one over thesecond gill thickening and a third beginning over the third gill thickening and ex-tending back from this point. The last is the primordium of the main lateralline. There are four gill thickenings, the first three extending behind the firstthree gills and the fourth lying in the region of contact of the fourth endodermicgill pocket. 6 Reconstruction of the preauditory region of Stage XXVI; age 154 hours;length 10 mm. The extent of the preauditory lines at this age is shown, as wellas the per
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
