No. 647] 



FAMILY RESEMBLANCES 



509 



Of these 956 records 22 were incomplete in the case of 

 relatives more remote than parents, children, brothers 

 and sisters. Twenty-three were incomplete in kinships 

 more remote than those mentioned. Fully half of the 

 replies of those found to have distinguished relatives 

 were originally incomplete either in names or designation 

 of relationship of names or both. The brother relation- 

 ship, where it would be supposed complete information 

 would be available, had 84 cases in the original data. 

 This number was raised to nearly 150 through consulta- 

 tion of the handbooks mentioned below. Not more than 

 25 of those added were found to have first biographical 

 mention at a date later than that of the request for in- 

 formation. 



It is unlikely that the ten per cent, who failed to reply 

 did so because of lack of relatives to report; it is un- 

 likely, because that information was a relatively small 

 part of the total requested. Two hundred and fifty-six, 

 or about one fourth of the number replying, were found 

 to have relatives of distinction or relatives who were 

 scientific men; since the other three fourths replied, 

 though they had no relatives to report, it seems reasonable 

 that those who did not reply did not represent a select 

 group. This is further shown to be the case in the num- 

 ber of cross relationships between the two groups. There 

 are found to be brother and cousin relationships that were 

 reported by some of those replying that would have been 

 reported if the others had replied. 



The objective criterion used is biographical inclusion 

 in one or more of the three following handbooks : ' ' Amer- 

 ican Men of Science, " " Who 's Who in America, " " Ap- 

 pleton's Cyclopedia of American Biography." Both 

 editions of ' ' American Men of Science, ' ' that is, the edi- 

 tions of 1903 and 1910, were consulted, and biographies 

 found in either were counted. Those found in the orig- 

 inal edition of Appleton's Cyclopedia," published in 

 1887-88, together with the appendix of 1900 and all ten 

 volumes of Who's Who in America," covering the pe- 



