Hrdlicka. 7 



My system of doing this was the following: I would have a reliable 

 clerk sitting behind a screen in the same room where I conduct the 

 examinations, and to this clerk I would dictate in a systematic way 

 the condition of part after part of the body of the subject examined. 

 To this record would later be joined the measures of the subject. 

 After the examination and measuring have been recorded on the 

 sheet, the same was completed with such case-book data concerning 

 the subject as were considered to be of importance and reliable. 



All the records concerning an individual would be kept on one 

 separate sheet. These individual sheets make it very easy to ar- 

 range the subjects, before tabulating the data, according to any 

 prime condition required (such as sex, age, etc.). 



The next important step in working on the records is their proper 

 tabulation. In order to facilitate this I constructed sheets of which 

 I give here an illustration. The advantages of such sheets are too 

 evident to be dilated upon. Such an arrangement enables us to 

 handle whole groups of subjects with almost as much ease and with 

 equal precision as we would handle an individual. 



It is hardly necessary for me to state that I made personally all 

 the examinations. This is the best way in which to assure a perfect 

 uniformity of the work and a full value of the results therefrom. 



As to the measurements, I have received valuable aid from Mr. 

 W. R. Buchanan, one of the attendants of the institution. 



All measuring was done with modern and well tested instruments. 

 Mr. Buchanan received thorough instruction in the matter from me, 

 and his measures were not allowed to stand as valid until I had satis- 

 fied myself that his errors in successive measurements on the same 

 person were reduced to a minimum, and that he had a thorough 

 understanding of what he was doing. Even then, in order to insure 

 a full reliability of the measurements, in all cases where a certain 

 measurement was found to differ from time to time through con- 

 ditions on the part of the individual measured (such as for instance 

 was the case with the height, the chest, and the force measurements), 

 I have allowed to be stated only the average of three measures 

 secured at different periods. In addition, I satisfied myself from 

 time to time by re-measuring some of the children that the data ob- 

 tained by Mr. Buchanan remain correct. Such precautions, with an 



