12 



CONTENTS 



PROBLEM 



221. To determine what parts o£ the body are most sensitive to (o) touch 



(6) heat and cold 



To study the anatomy of the nervous system 

 To study the structure and use of neurons . 

 "What is a reflex action ? . . 



To compare the reaction time of hearing and touch 



226. To compare a reflex action with an act of thought 



227. To study habit forming . . . . 



228. To study the mechanism of habit formation 

 To consider some harmful habits 

 How to go to work to form good habits 

 To determine the relation between taste and smell with reference to 



food flavors .... .... 



How to find out certain defects of vision in the laboratory 

 What are some of the effects of alcohol on the nervous system ? 



222. 

 223. 

 224. 

 225. 



229. 

 230. 

 231. 



232. 

 2.S3. 



XXIV. Man's Improvkment of his Environment 



234. How to ventilate my bedroom (Home problem) 



235. To compare the duster and the dry cloth with the moist cloth in 



cleaning the schoolroom . .... 



236. What should I eat for luncheon ? 



237. To make a sanitary map of my own environment 



238. To determine the bacterial content of different grades of milk . 



239. To determine the bacterial content of some kinds of water 



240. To determine some of the problems of water supply and sewage dis- 



posal for a city 



241. Is typhoid a city or a country disease ? .... 



242. What is the annual cost to New York city of some preventable 



diseases ? . . 



243. What are the chief causes of death in a city ? . . . • 



244. To study the relation of the death rate to the season . 



245. To find a relation between flies and mortality ..... 



246. To determine the number of school children who needed treatment 



for different diseases in New York city, 1914-1915 



247. How to discover the presence of adenoids 



248. To find some ways of preventing the spread of disease 



249. First aid in the home. A summary of what to do and how to do it . 



252 

 253 

 254 

 254 

 254 

 255 

 255 

 256 

 257 

 257 



258 

 259 

 259 



262 

 263 



'263 

 264 

 265 

 266 

 267 



268 

 269 



269 

 272 

 272 

 272 



273 

 274 

 274 



277 



