. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 85. 83â85. Milne-luiwimlsia nathorslii. I'ig. Hy. Transverse Section of a portion of the scapus (compare text!). Fig. 84: Transverse section of a perfect mesentery in the reproductive tract. Fig. 85: Transverse section of parietal cuticle (textfig. 83 c) is thick, it rcscml)les the same layer in Isoedwardsia; it is only a little stained, or not at all so, with borax-carmine which is easily absorbed by the mesogloea. Tlic mesogloea is thinner tlian the ectoderm. In
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 85. 83â85. Milne-luiwimlsia nathorslii. I'ig. Hy. Transverse Section of a portion of the scapus (compare text!). Fig. 84: Transverse section of a perfect mesentery in the reproductive tract. Fig. 85: Transverse section of parietal cuticle (textfig. 83 c) is thick, it rcscml)les the same layer in Isoedwardsia; it is only a little stained, or not at all so, with borax-carmine which is easily absorbed by the mesogloea. Tlic mesogloea is thinner tlian the ectoderm. In the endoderm of the colunm I have obser\'ed large nematocysts. Whether these latter are normal com- ponents of the endoderm I cannot with certainty decide. The circular muscles of the colunm are weak. The ectoderm of the capitulum is thicker than the mesogloea. The ectoderm of the tentacles is higli and contains very numerous, closely packed spirocysts of variable size. The largest are of the same kind as those of the column, but more sparse and 34â36 X 3,5â5 // in size. The ectoderm of tlic actinophar>-nx is higli in the ridges; the rather numerous nematocysts show a distinct l-jasal i)art to the sjiiral tliread and rcacli a size of 34â36 X â5 /â <⢠The number of the mesenteries is 12 of which only 4 are weak olT-shoots in the most distal part. The longitudinal muscle-pennons of the 8 "Edwardsia-wmsQntm&s" are not strong in the reproductive region and show in transverse-sections about 10 low folds, all of about equal height or gradually shortened in the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
