IGO 



C. M. Jackson. 



TABLE IV (Continued). 



Relative Size of Various Fetal Organs (in Percentage of Total Body 



Volume) in Specimens ObS'Eeved. 



No. and Sex. 



195 (m) 



Crown-rump length . . 16 cm. 

 Volume of body 375 cc. 



Head 37.33% 



Upper extremities — 8 . 53 

 Lower extremities — 15 . 28 



Trunk 38.86 



Brain 15.47 



Spinal cord 187 



Thyroid gland 053 



Thymus 2 



Heart 1.07 



Right lung 1.27 



Left lung 1.04 



Liver 5.87 



Spleen 051 



Pancreas 107 



Right kidney 427 



Left kidney 453 



Right suprarenal 373 



Left suprarenal 400 



Stomach 28 



Intestines 2 . 59 



Sex glands 



154 (f) 210 (f) 



17 cm. 

 464 cc. 



38.79% 

 7.76 

 13.36 

 40.04 

 15.95 

 .155 

 .069 

 .179 

 1.08 

 1.25 

 1.08 

 4.74 

 .11 

 .097 

 .302 

 .28 

 .172 

 .205 

 .194 

 .3.02 



17.5 cm, 

 383 cc. 



37.13% 

 7.91 

 13.81 

 41.07 

 13.76 

 .226 

 .061 

 .171 

 .83 

 1.59 

 1.42 

 5.81 

 .106 

 .068 

 .378 

 .386 

 .154 

 .186 

 .52 

 2.34 

 (.026) 



172 (m) 



18 cm. 

 460 cc. 



38.04% 

 7.39 



14.78 



39.78 



15.54 

 .184 

 .148 

 .113 

 1.195 

 .87 

 .71 

 5.4 

 .076 

 .098 

 .54 

 .51 

 .196 

 .217 

 .196 

 2.83 



(f) 



20 cm. 

 605 cc. 



34.05% 

 8.1 

 13.72 

 44.13 

 16.53 

 .198 

 .107 

 .165 

 1.37 

 1.12 

 .88 

 6.94 

 .088 

 .099 

 .446 

 .479 , 

 .182 

 .198 

 .529 

 3.8 



192(f) 



20 cm. 

 775 cc. 



37.42% 

 8.0 

 14.19 

 40.65 

 16.65 

 .271 

 .132 

 .232 

 1.42 

 1.61 

 1.2 

 6.19 

 .194 

 .101 

 .465 

 .490 

 .155 

 .232 

 .606 

 4.26 



