6 INTRODUCTION 



as follows: First, $250.00; second, $100.00; third, 

 $75.00 ; fourth, $50.00, and fifth, $25.00. Quite a num- 

 ber of competing essays were received from several 

 different countries, and the best of them will be found 

 in this volume. 



Naturally, it was not the intent of this contest to 

 find a means of disposing of $500.00 amongst five es- 

 sayists, but rather to gather together a number of 

 efforts from different sources in order that they might 

 be made available for the clientele of The Harrower 

 Laboratory and such physicians as might care to avail 

 themselves of this opportunity to get some additional 

 suggestions in this special line of study. 



It must be understood that each subject is consid- 

 ered from an entirely different viewpoint, because 

 each essay is prepared by a different person, whose 

 interests, medical environment and literary facilities 

 differ very materially. In some instances there may 

 be a slight redundancy because it happens that sev- 

 eral writers may be discussing the same subject and 

 necessarily must repeat certain fundamentals that 

 would be found in another paper on the same subject. 

 This repetition, to my mind, is an advantage, because 

 in this way the fundamentals are reiterated and the 

 impression that they may make becomes the more 

 lasting. 



It has been decided to extend another invitation to 

 physicians, both here and abroad, to contribute essays 

 in another similar contest for which the same amount 

 $500.00 divided in the same manner, will be offered 

 in 1921. The rules of this contest will be identical 

 with this year and printed instructions and an indi- 

 vidual contest number will be sent to any interested 

 physician on request prior to June 30, 1921. It is 

 planned to close the contest at the end of September 

 and to announce the prize winners before the end of 

 the year. 



