PREFACE. vil 
and by him presented to the Archeological Institute of America, March 
1880, ina “Statement concerning the Objects of an Expedition to New 
Mexico and Arizona, and of one subsequently to Yucatan and Central 
America.”. In many other ways the author is indebted to Mr. Morgan as 
the pioneer investigator into the sociology of the North American Indians. 
The section on Kinship especially is a summary and condensation of a 
portion of his great work on “Consanguinity and Affinity,” published by 
the Smithsonian Institute; but the schedule has been considerably enlarged, 
and diagrams have been devised with the hope of leading to more exhaustive 
research and more nearly accurate records. 
The writer had prepared a section on the study of materials which was 
thought might be useful in a more advanced stage of linguistic study than 
that represented in the collection of the schedules. In this he had discussed, 
to some extent, methods of analyzing Indian languages; but his own work 
had been rather that of the pioneer, and in such advanced studies he had 
taken but little part; and the section as written was unsatisfactory. After 
it had gone into the printer’s hands it occurred to the writer to consult 
again a paper written some years ago and read by Mr. J. Hammond ‘Trum- 
bull before the American Philological Association.* On reading the paper 
again it was thought best to cut out what had been written on this subject 
and to insert in lieu thereof a large portion of Mr. Trumbull’s paper. 
The method of treatment here employed has one characteristic requir- 
ing mention. In its preparation, from time to time, illustrations from Indian 
languages have been more and more eliminated. To the general scholar 
perhaps this is a fault, but experience has fully demonstrated to the author 
that illustrations from unknown languages, presented to the working stu- 
dent in the field, serve rather to obscure than elucidate the subject in hand. 
Illustrations to be of value in such cases must come from materials familiar 
to the student. In incorporating Mr. Trumbull’s paper, which was written 
for scholars rather than for students in the field, the writer did not consider 
himself authorized to modify in any manner what Mr. Trumbull had said. 
Trans. Am. Phil. Asso., 1869-70, Hartford: 1871, 8°. pp. 53-79. 
