UNIVER 



JFC 



INTRODUCTION 



In planning a series of text-books for elementary 

 school use I have borne in mind the fact that the main 

 object of physiological instruction should be to aid in 

 the establishment of good hygienic habits. I have also 

 remembered that habits are more often established in 

 the individual by social custom and wont, by example 

 and precept, than by logic and reason. 



In order to maintain the interest, and avoid the dead- 

 ening effect of the annual review of identical subjects, 

 I have endeavored to supply for each year some dis- 

 tinctive and separate line of thought in hygienic direc- 

 tions. In the first volume (Good Health}, for example, the 

 skin is discussed simply from the standpoint of health; 

 in the second volume (Emergencies], from the standpoint 

 of emergencies, burns, scalds, etc.; in the third volume 

 ( Town and City), as a disease-conveying agent, a 

 means of communicating scarlet fever, etc. In the fourth 

 volume (Physiology], the general physiology of the skin 

 is discussed; while in the fifth volume (Control], it is 

 discussed as a sensitory or nervous organ. Thus the 

 same facts are inculcated through the presentation of 

 five different phases of the subject. 



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