98 RECENT LITERATURE. 



the human embryo as the organ of Jacobson is not really that structure, but represents a 

 special gland which occurs in some lemurs in the lower part of the nasal septum. 



The epiblast of the olfactory area early becomes thickened, and resembles in structure the 

 neural epiblast (His). As in the latter, some of the cells (neuroblasts) become pyriform and 

 nerve-fibre processes grow out from them, whilst the remainder form long sustentacular 

 columns, which partially anastomose to form a spongework. The neuroblasts subsequently 

 pass out towards the olfactory lobe as already described (p. 81). 



All the complexities of the nasal fossae (and they are far more complex and labyrinthic in 

 many animals than in man) are produced by folds and outgrowths of the original simple 

 depressions, and the thickened epithelium of these depressions extends over all parts of the 

 cavities which are thus formed. But it is only in the upper part of the nasal f ossas that the 

 connexion by nerve-fibres with the olfactory lobe becomes established, and it is in this part 

 only that the true sense-epithelium becomes developed. In the lower, or respiratory part 

 of the fossa3 the epithelium remains relatively thin and becomes ciliated. 



RECENT LITERATURE. 



Eye and Nose* 



Born, G-., Die Nasenhohle u. der Thrdnennasengang der amnioten Wirbelthiere, Morph. Jahrb., 

 1879 u. 1883. 



Disse, J., Die AusbUdung der Nasenhohle nach der Geburt, Arch. f. Anat. u. Physiol., Anat. 

 Abth. 1889. 



Ewetzky, Th., Zur Entwickelungsjeschichte des Thrdnennasenganges beim Menschen, Archiv f. 

 Ophthalmol., Bd. xxxiv., 1888. 



Gottschau, Zur Entwickelung der Sdugethierlinse, Anat. Anzeiger, 1886. 



His, "W., Anatomie'menscJilicher Embryonen, Leipzig, 1880 85 ; Unsere Korperform, &c., Leip- 

 zig, 1875 ; Die Formentwickelung des menschlichen Vorderhirns, Abhandl. d. k. Sachsischen Gesell- 

 schaft, 1889. 



Keibel, F., Zur Entwickelung des Glaskorpers, Arch. f. Anat. u. Phys., Anat. Abth., 1886. 



Kessler, Zur Entwickelung des Auges der Wirbelthiere, Leipzig, 1877. 



Kblliker, A., Zur Entwickelung des Auges und Geruchsorganes menschlicher Embryonen, Fest- 

 schrift der Schweizer. Universitat Ziirich gewidmet, Wiirzburg, 1883. 



Koranyi, A., Beitrdge zur Entwickelung der Krystallinse bei den Wirbelthieren, Internat. Mo- 

 natsschr. fiir Anatomic u. Physiologic, 1886. 



Legral, Die Nasenhohle u. der Thrdnennasengang, Morph. Jahrb., 1883. 



Ear. 



Bag-insky, B., Zur Entwickelung der Gehorschnecke, Verhandl. d. physiol. Gesellschaft zu Berlin, 

 1885-86. 



Beard, J., On the segmented sense organs of the lateral line and on the morphology of the vertebrate 

 auditory organ, Zool. Anzeiger, No. 161, 1884. 



Boettcher, A., Ueber Entwickelung u. Bau des Gehorlabyrinths, Verhandl. d. kaiserl. Leop. 

 Carol. Acad., Dresden, Bd. 35. 



His, W., jun., Zur Entwickelung sgeschichte des Acustico-facialis-Gcbictes beim Menschen. Arch. 

 f. Anat. u. Physiol., Anat. Abth., 1889, Supplement Bd. 



Hoffmann, C. K., Ueber die Beziehung der ersten Kiementasche zu der Anlage der Tuba Eustaehii 

 und des Cavum tympani, Archiv f. mikrosk. Anat. xxiii., ]884. 



Noorden, v., Die Entwickelung des Labyrinths bei Knochcnfischen, Arch. f. Anat. u. Physiol., 

 Anat. Abth., 1883. 



Buding-er, N., Zur Entwickelung der hdutigen Bogengdnge der innercn Ohres, Sitzungsher. d. 

 Akademie d. Wissensch. zu Miinchen, Bd. xviii., 1888. 



Tuttle, Alb. H., The relation of the external w.eatus, tympanum and Eustachian tube to the first 

 visceral cleft, Proc. American Academy of Arts and Sciences, 1884. 



Vassaux, Recherches sur les premieres phases du devdoppement de Vceil chez le lapin. Arch, 

 d'ophthalm., 1888. 



