INDEX 



i6s 



Mesodermic somites (see mesoderm). 

 Meso-diencephalic boundary, f. 42, 117 

 Mesogaster, 153 

 Meso-metencephalic boundary, f. 42, 



117 

 Mesonephric duct, f. 51, f. 52, f. 53, 



146, 149 

 Mesonephric tubules, f. 51, f. 52, f. 53, 



146, 148 

 Mesonephros, f. 47, 144 

 Mesothelium (= epithelial layer of 



mesoderm lining coelom) f . 54 

 Metamerism, in mesoderm, 40, 47, 48, 



150 

 in nervous system, f . 20, 59 

 Metanephros, f. 51, 144 

 Metacoele ( = lumen of metencephalon 



q.v.) 

 Metencephalon, f, 42, 65, 117 

 Metanephric duct, f. 51, 146 

 Metanephric tubules, f. 51, 146 

 Mid-brain (see mesencephalon). 

 Middle ear, 123 

 Mid-gut (see gut). 

 Morula, 20, 21 

 Mouth opening, 112 

 Muscle plate (see myotome). 

 Myelencephalic tela (= thin roof of 



myelencephalon) f. 42, 118 

 Myelencephalon, f. 42, 65, ij8 

 Myelocoele (= lumen of myelen- 

 cephalon q. v.). 

 Myelo-metencephalic boundary, f. 42, 



117 

 Myocardium, 69, 143 

 Myoccele, 107 

 Myotome, f. 38, f. 44, 107 



Nasal pit (see olfactory pit). 

 Naso-lateral process, f, 41, 112 

 Naso-medial process, f. 41, 112 

 Naso-optic groove, f. 41 

 Neck of latebra, f . 3 

 Nephric tubules, f. 51, 145 

 Nephrostome, f. 52, 147 

 Nephrotomic plate, 48 

 Nerves, cranial, 118 



spinal, f. 44, 119 



sympathetic, 120 

 Neural canal (= lumen of neural 



tube). 

 Neural crest, f. 37, 99, 120 



Neural fold, f. 17, 42, 45, 99 

 Neural groove, f. 17, 42, 44 

 Neural plate, f. 11, f. 13, 41 

 Neural tube, 52, 99 

 Neurenteric canal, 56 

 Neuromeres, f. 20, 59 

 Neuropore, anterior, f. 19, 55, 99 



posterior, 56 

 Notochord, f. 11, f. 13, 40, 55 

 Nucleus of Pander, f. 3, 12 



(Esophagus, f. 43, 101, 126 

 Olfactory nerve (= cranial nerve I), 



123 

 Olfactory pit, f. 40, f. 41, f. 46, 112, 123 

 Optic chiasma, f . 42 

 Optic cup, f. 42, 95, 121 

 Optic lobes, 117 

 Optic nerve (= cranial nerve II) 



98, 122 

 Optic stalk, f. 45, 98, 122 

 Optic vesicle, primary, f. 23, f. 28, 54, 

 62, 95 



secondary, f. 36, 97, 120 

 Opticcele ( = lumen of primary^? optic 



vesicle, q. v.). 

 Oral cavity, 102 

 Oral opening, 1 24 

 Oral plate, f. 31, 124 

 Oral region, f. 41, in 

 Orientation of embryo within'egg, f . 3c 

 Otocyst (see auditory vesicle). 

 Ovum, fertilization of .'^9 



maturation of, 9 



ovarian, f. i, 7 

 Ovulation, 9 



Pancreas, f. 43, 127 

 Pander's nucleus, f. 3, 12 

 Pellucid area (see area pellucida). 

 Petrosal ganglion (= ganglion of 

 cranial, nerve IX) f. 42, 118 

 Periblast, 10 

 Pericardial region of coelom, f. 24, 



f. 27, f. 55, 49, 72, 150 

 Peritoneal region of coelom, 150 

 Pharyngeal pouches, f. 36, 103 

 Pharyngeal derivatives, 124 

 Pharynx, f. 35, loi 

 Pigment layer of retina, f. 45 » 9^, 122 

 Pineal gland, 95 

 Pituitary body, 95 



