CONTENTS 



11 



203. 

 204. 

 205. 

 206. 



XX. Digestion and Absorption . 

 To compare the digestive system of a frog with that of man 



To study my own teeth 



To demonstrate the function and structure of a simple gland 



To find the use of digestion 



To determine the conditions most favorable for gastric digestion 



To determine another effect of gastric juice 



To note the action of pancreatic juice on starch . 



To note the effect of pancreatic juice on oils and fats 



192. To study the effect of artificial pancreatic juice on protein 



193. To find one action of bile 



To study the method and place of absorption in the human 

 To understand the structure of a villus 

 How may foods be absorbed by the villi ? . 

 To find the pathway of absorbed foods 



184. 

 185. 

 186. 

 187. 

 188. 

 189. 

 190. 

 191. 



19-1. 

 195. 

 196. 

 197. 



XXI. 



The Blood and its Circulation 



198. To prove that blood contains nutrients 



199. To study the corpuscles of the blood .... 



200. To determine the effect of oxygen and carbon dioxide upon 



201. To study the structure of the heart .... 



202. To study the circulation of the blood .... 

 To determine the rate of your own heartbeat 

 What is the effect of hard mental work on the pulse beat ? 

 What effect has exercise on the heartbeat ? 

 How to stop the flow of blood in case of an accident . 



XXII. Respiration and Excretion 



207. To compare the structures of the lungs of the frog and of man 



208. To determine changes that take place in air in the lungs 



209. To find the capacity of the lungs .... 



210. To study the mechanics of respiration 



211. To study the part the ribs play in respiration 



212. What is the function of the diaphragm ? 



213. To find out what becomes of the oxygen in the lungs 



214. To make a study of ventilation . . . . . 



215. To study air for presence of dust (Home experiment) 



216. To determine the best method of cleaning a room 



217. What makes a crowded, closed room uncomfortable ? 



218. To study the structure of the kidney .... 



219. The skin as an organ of excretion and heat control . 



XXIII. Body Control and Habit Formation 



220. How are we aware of the world about us ? 



body 



the 



blood 



I'AQE 



220 

 221 

 222 

 223 

 224 

 224 

 225 

 225 

 225 

 226 

 226 

 227 

 227 

 227 

 228 



232 

 232 

 233 

 234 

 235 

 236 

 237 

 237 

 237 

 238 



240 

 241 

 241 

 242 

 242 

 243 

 243 

 244 

 244 

 245 

 245 

 246 

 246 

 247 



251 

 251 



