326 



THE EVOLUTION OF MAN. 



ALPHABETICAL LrST 



Of the Meaning of the Letters in J'lates IV. and V. 



N.B. — The skin-sensory layer is indicated by orange, the wkin-fibroGt 

 layer by blue, the intestinal -fibrous layer by red, and the intestinal-glanduliij 

 layer by green. 



a, anal opening 

 ah, amnion-cavity 



al, allantois (urine sao) 



am, amnion 



b, ventral muscles 



bb, breast-bone (sternwn) 



c, body. cavity (coeloma) 



c ti breast-cavity (cavitas pleurce) 



c„, ventral cavity (cavitas peritonei) 



ch, notochord (chorda) 



d, intestinal tube (tractus) 



dc, large intestine (colon) 



dd, small intestine (ileum) 

 ds } yelk-sac (navel-vesicle) 



e, embryo or germ 

 /, matrix (uterus) 



g, mesentery (mesenterium) 



h, horn- plate (ceratina) 



hb, urinary vesicle (vesica urince) 



hk, ventricle of heart 



hi, left (arterial) heart 



hr, right (venous) heart 



hv, auricle (atrium) 



hz, heart (cor) 



i, gall-bladder (vesica fellea) 



k, germ-glands (sexual glands) 



ks, gill-openings (throat -openings) 



'., leather-plate (corium) 



lb, liver (hepar) 



'r, windpipe {trachea) 



■' . lung (pulmo) 



medullary tube (tubus medul- 

 laris) 



m, — m 



8) 



the five brain -bladders 



m tt 



m t , 

 m 



'0> 



fore-brain 



twixt-brain 



mid-brain 



hind-brain 



after-brain 



spinal cord (medulla spinalis) 

 md, mi Ik -glands (mamma) 

 mg, stomach 

 mh, mouth-cavity 

 mp, muscle-plate (muscularis) 

 n, principal veins 

 o, mouth-opening (osculum) 

 p, ventral salivary gland (pancreas) 

 q, organ of sense 

 r, muscles of the back 

 rp, ribs (costce) 

 s, skull (cranium) 

 sb, os pubis 



sh, throat-cavity (pharynm) 

 »r, gullet (oesophagus) 

 t, aorta (main artery) 

 u, primitive kidney (protovephron) 

 uw, embryonic vertebra (metameron) 

 v, intestinal vein (primitive vein) 

 vg, vagina 

 w, vertebra 

 wb, vertebral archet 

 wk, vertebral bodies 

 0, legs, or limbe 

 y, space between the amnion and 



the yelk-sac 

 *, midriff (dwvphragma) 



