GROWTH 



muscle, 144. 



musculature, 126, 129, 134. 

 Mustelus cants , 128. 

 myxedema, 155. 



Necti.nis embryo, 120. 



nervous system, 130, 1475 breakdown, 



43- 

 neural effects, 139; groove, 112; tube, 



115; type, 134. 

 Newburgh, 77. 

 Newton's law, 40. 

 nucleic acid, 1 7. 

 nucleo-proteids, 16. 

 nucleus, 4, 135. 

 nucleus-plasma ratio, 135. 

 nutrients, 67. 



oestrus, 160, 161, 165, 167. 

 organ-forming areas, 112, 119. 

 organ systems, growth of, 125. 

 Osborne and Mendel, 52, 72-74, 76, 



77, 81, 85, 86, 102, 104. 

 ovary, 159, 165. 

 overactivity, 169. 

 ovum, 32, 111, 165. 

 oxyhemoglobin, 17. 



Palm, 91. 

 pancreas, 148. 

 parathyroid, 156, 157. 

 Park, 89. 



parthenogenesis, 5. 

 Paton, 92. 

 Pearl, 5, 62. 

 Pecksniff, 15. 

 Peebles, 118. 

 pelvic width, 124. 

 periodic growth, 37. 

 permanent cells, 137. 

 Pharaoh's serpent, 12. 

 phosphorus, 77, 78, 81. 

 photogenic apparatus, 145. 

 physical effects, 139. 

 physical training, 168. 



physico-chemical process, 41. 



physiological factors, 143, 144. 



pig brain, 130; embryo, 119; head, 



128 ; viscera, 131. 

 pigmies, 150, 154. 

 pituitary, 135, 162-166, 167. 

 pituitrin, 166. 

 placenta, 32. 



plane of nutrition, 94, 95. 

 plastic type of growth, 137. 

 pneumonia, resistance to, 42. 

 Polvogt, McCollum, and Simmonds, 



77- 

 polyneuritis, 84, 85. 

 population growth, 61. 

 posterior lobe (pituitary), 165-167. 

 posture, 118. 

 potassium, 81. 

 prenatal nutrition, 92, 97. 

 pressure in plant cells, 22. 

 primitive streak, 112. 

 proportional growth, 124. 

 protein-free milk, 85. 

 proteins, 17, 68. 

 protoplasm, 3, 143. 

 puberty, 34, 62, 165. 



Rasmussen, 135. 



rat brain, 130, 135; growth curve of, 

 48; hypophysis, 135; musculature, 

 129; skeleton, 129; skin, 125; vis- 

 cera, 131. 



rates of growth, 20, 118. 



reproductive organs, 134. 



respiration, 17. 



reversible growth, 4, 37. 



rice polishings, 85. 



rickets, 88. 



Robertson, 53, 54, 139. 



Rohmann, 78. 



root tip, 7, 21. 



Rose and Cox, 72. 



Roux, 140. 



salamander, 8, 59. 



