FOR WAGGONER’S BIOLOGY 
39 
Government Printing Office, Washington, D. C. The Pure Food 
and Drugs Act,” 8th revision (1922), costs five cents; the “Postal 
Fraud Act,” to be found in “ Postal Laws and Regulations of the 
U. S.,” one dollar.) 
D. Why do “ styles ” in “ patent medicines ” change from year 
to year? If all the statements made by the manufacturers of 
“ patent medicines ” were true, why should there be so many 
colds and other diseases? What is your conclusion as to the real 
reason for the manufacture of so many nostrums? 
II. Summaries and Conclusions. 
1. At the end of the period used for this project, summarize the 
individual records of the class as follows: (Committees of pupils 
may do this work if so desired.) 
Date 
No. OF PUPILS AFFECTED BY “ COLDS ” AND 
OTHER RESPIRATORY DISEASES 
Confined to home 
Not confined to home 
Total ... 
Each pupil may copy this table. What is the average number of 
days of complete disability (confinement to the home) per pupil? 
Of partial disability? Estimate the equivalent of the former in 
money value by determining the wages which might have been 
earned in an equal period of time in some occupation engaged in 
by boys and girls of your age. 
2. List the supposed causes to which may be attributed the 
colds, etc., of the various pupils. Rearrange in a series according 
to frequency. From your study of the text you have found that 
without the presence of germs such diseases as colds could not 
