INDEX 



189 



Scammon, 123, 125, 133, 135. 

 Schanz, 91. 

 Schmorl, 8 8. 

 scurvy, 87. 

 Sebauer, 79. 

 seed plant, 5. 



self-accelerating phase, 49. 

 self-inhibiting phase, 49, 61. 

 senescence, 31, 43, 44, 62, 63, 103. 

 Sequoia, 8. 

 sexual growth, 160. 

 Shaffer, 18. 

 Shakespeare, 31. 

 sheep, 154. 

 Shipley, 89. 

 Shoemaker, 123. 

 silicon, 83. 

 Simmonds, 77, 89. 

 Simpson, Sutherland, 155. 

 size, 67. 



skeleton, 126, 129, 134, 163, 165. 

 skin, 125, 126. 



slime mold, 4; chemical analysis, 16. 

 Smith and Engle, 164. 

 sodium, 81. 

 somites, 115. 

 sperm, 5. 



spinal cord, 115, 126, 134. 

 squash, 22, 61. 

 stable cells, 137. 



stages of growth, 7, 32; in human de- 

 velopment, 31, in. 

 Starling, 150. 



Stewart, 100, 105, 106, 135. 

 stimulation, 144, 145. 

 strength (physical), 34. 

 structure, 140. 

 stunting, 103. 

 sugar, 19, 148. 

 sulphur, 79. 

 sunlight, 23, 90. 

 superovulation, 165. 

 supporting tissue, 135. 

 suprarenal glands, 133, 136, 157-159. 

 suprarenin, 157. 



sympathetic nervous system, 137. 



tail, 32, 119. 

 Takamine, 157. 

 Tarsius embryo, 119. 

 temperature, 21. 

 Thompson, 139. 

 thoracic dimensions, 123. 

 thymus, 133. 

 thyroid, 151-155, 159. 

 thyroxin, 83, 153, 157. 

 trephones, 139. 

 tryptophane, 69, 71-73. 

 tumors, 169-172. 

 types of growth, 134. 

 tyrosine, 69, 71. 



underfeeding, 98. 

 undernutrition, 95, 99, 101. 

 unstable equilibrium, 36. 

 uterus, 133, 160, 162. 



vagina, 160. 



vertebrate, 8. 



virilism, 158. 



viscera, 126, 130-133. 



vital force, 1 1 . 



vitality, 43. 



vitamin A, 87; B, 85, 87; D, 90. 



vitamine, S5. 



vitamins, 25, 83. 



Voit, 79. 



Von Baer, 115. 



Wallis, 140. 

 Waters, 100. 

 water-soluble B, 87. 



xerophthalmia, 87. 



zein, 73. 



zinc, 83. 



Zucker, Johnson, and Barnett, 90. 



zygote, 5, 8. 



