. Journal of morphology. Fig. 11 Cross section through the ethmoid region a few sections in front of thepreceding figure, showing the separation of the capsular wall dorsally from theseptum, the thickening of the paries nasi to form a rudimentary concha, and thefusion of the planum nasi and cartilago paraseptalis with the septum posterior tothe foramen praepalatinum which is seen in the following figure. X 15. Fig. 12 Cross section a short distance in front of the preceding figure, showingthe foramen praepalatinum (/.p.) and the commissura spheno-ethmoidalis ().X 15. Fig. 13 Cross sectio
. Journal of morphology. Fig. 11 Cross section through the ethmoid region a few sections in front of thepreceding figure, showing the separation of the capsular wall dorsally from theseptum, the thickening of the paries nasi to form a rudimentary concha, and thefusion of the planum nasi and cartilago paraseptalis with the septum posterior tothe foramen praepalatinum which is seen in the following figure. X 15. Fig. 12 Cross section a short distance in front of the preceding figure, showingthe foramen praepalatinum (/.p.) and the commissura spheno-ethmoidalis ().X 15. Fig. 13 Cross section a short distance in front of the preceding figure showingthe crista longitudinalis septi (), the pila supraglandularis (), and thelamina terminalis anterior (). X 15. Fig. 14 Cross section through the extreme anterior end of the olfactory capsuleof the same embryo, showing the glandula nasalis externa situated ventral tothe cavity of the capsule. X 15. 771 atlas --—MA. Fig. 15 Cross section through the extreme posterior end of the occipital con-dyle of an embryo slightly younger than that represented in the preceding figures,showing the chorda dorsalis () incompletely surrounded by the occipital con-dyle which is here hypochordal in position. X 15. Figs. IG to 19 A series of four cross sections through the ethmoidal region ofan embryo having a carapace mm. long. The series is from anterior to pos-terior. In figure 16, on the right side, a cartilaginous nodule is lying in contactby its median surface with the pila supraglandularis (). In figure 17 the pilasupraglandularis has extended ventrally and fused with the lamina terminalisanterior {). The thickening of the paries nasi to form a concha is greatestin figure 19. X 15. 772
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Keywords: ., bookcentury1900, bookdecade1, booksubjectphysiology, bookyear1912
