The Growth of Children. 69 



obtained, through the kindness of Lieut. Zalinsky, from a 

 number of the pupils in tlie Massachusetts Institute of Tech- 

 noh)gy. 



The occupation of parents was copied from the school 

 records, with a view of ascertaining approximately the effect 

 of the social condition of the parents on the growtli of the 

 children ; but the utilization of the data tlius obtained has 

 been necessarily postponed for the present, on account of the 

 great addition to the labor of this investigation which it 

 would involve. 



Under the head of remarks the teachers were requested to 

 note any deformity of the pupils wliich might render it expe- 

 dient to exclude their measurements from the calculation of 

 a normal average. The fact of color was also noted under 

 this heading, in order that negro and mulatto children might 

 be distinguished from white children of American parents. 



The statistical data above described were collected in 

 nearly all the public schools of the city proper, in several 

 schools in South Boston, Roxbury, Charlestown, and Jamaica 

 Plain, in the Massachusetts Institute of Technology, in Mr. 

 J. P. liopkinson's private Latin School, in Miss Hubbard's 

 school for young ladies, and, through the kindness of Dr. 

 Robert Amory, in several of the public schools of Brookline. 

 About 24,500 observations were thus collected, a number 

 which was considered sufliciently large to justify conclusions 

 on the subjects to whicli tlie inquiry was directed. 



On the receipt of the records from the various schools tlie 

 observations were at once tabulated according to the nation- 

 ality of the parents, those of each nationality being arranged 

 on a separate series of sheets, showing at a glance, in parallel 

 columns, all the observations of any given age. The greater 

 part of this work of tabuhition was performed by Miss Mar}^ 

 P. Nichols, to whose accurate and patient labor the value of 

 tlie results obtained is largely due. Mr. James Dike also 

 rendered valuable assistance in this work. 



In this tabulation it was important to select only those 



