Identifier: danishingolfexpe1512dani (find matches)
Title: The Danish Ingolf-expedition
Year: 1898 (1890s)
Authors: Danish Ingolf-Expedition, 1895-1896 Wandel, C. F. (Carl Frederik), 1843-1930 Ingolf (Ship)
Subjects: Marine animals Marine animals Hydrography Hydrography Scientific expeditions
Publisher: Copenhagen, H. Hagerup
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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cleapparatus is seen. Figs. 10—12 show the oesophagus, the four entodermal sacs and the tentacles. Fig. 13 is at the level, ,where the oesophagus passes into the transverse fuiTOw, fig. 14passes through the furrow, below the oesophagus. The right tentacle is seen lyingwithin the furrow. In figs. 6—12 are seen the costse, lying in their furrows, the inter-costal parts arching somewhat over them. (The fig. 12 has perhaps become a little too large, belonging to the same section as theother figures; the reason is that the epidermis of the specimen has wrinkled to someextent; but these wrinkles, doubtless exclusively due to the preservation, have been elim-inated and the natural shape reconstructed. The same has been the case with all thesections, of embryos as well as grown specimens, the artificial wrinkles having every-where been left unreproduced, the natural course of the ectodermal line having beenreconstructed). ItKiull ExpcJUiorien I Hi .Morl^eji.sen . ( Irrio/iJiorn . /ah. I\.
Text Appearing After Image:
Th, Mortanssn. deL. TjalfieUxi. Ij-utLoma. A/rLin. Plate X. Plate X. Figs. 1—g. Successive vertical sections, parallel to the sagittal plane, through an embryo in the stage III,prepared out of the egg-membrane. *°/i. Fig. I. The section goes through the outer part of the tentacle sheath. Fig. 2. Further inwards, the section going through the coiled-up tentacle which lies withinthe tentacle .sheath. (Comp. PI. II. Fig.8, PI. VIII. Fig. 12). The outer end of the entodermalsacs is seen in the section; here the large entodermal cells are lying in two strands, asin the branching peripheral canal system. Figs. 3—7 give successive sections through the tentacle apparatus and the entodermal sacs.Fig. 8 is inside the tentacle basis. In fig. 6 is seen the direct connection between thelumen of the entoderm sacs and the diverticula in the tentacle basis. Figs. 7—8 showthe continuation of the costal sacs as low furrows running towards the apical organ. Fig. 9. Median section, through the api

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