CHAPTER XIV 

 CLOTHING AND ITS USES 



Problems. i. To understand How the temperature of 

 the body is regulated. 



2. To learn what is proper clothing for our bodies and 

 feet. 



3. To see of what our clothes are made. 



4. How can we detect fraudulent materials in cloth- 

 ing? 



5. To see how clothing is cleaned. 



Experiments. i. To distinguish wool from cotton by the burning test. 



2. To show the effect of chemical reagents on different fibers. 



3. Removal of spots and stains. 



Project I. To FIND OUT OF WHAT MATERIALS CLOTHES ARE MADE. 



1. Find out how to make various, chemical tests for different 

 kinds of fibers. 



2. Find out some of the characteristic physical properties, in- 

 cluding examination under the microscope if possible. 



3. Practice in applying tests to poor materials. 



4. Practice in applying tests to known mixtures. 



5. Use of tests in determination of mked goods, or for adultera- 

 tion, filling, etc. 



6. Common fibers for testing: cotton, mercerized cotton, linen, 

 wool, silk, artificial silk. 



7. Apply tests to determine composition of various articles of 

 clothing worn, if samples for testing can be obtained. 



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