Wisconsin Academy of Sciences , Arts and Letters. 
Page. 
Early Lutheran Immigration to Wisconsin by Kate A. Everest. 288 
The Clan Centers and Clan Habitat of the Effigy Builders, by S. D. 
Peet (with Plate XII). 299 
The Limonene Group of Terpenes, by Edward Kremers. 300 
The Pseudo-Gregorian Drama Xpi6ro<i nddx 0Dy in its Relation to 
the Text of Euripides, by P. L. Van Cleef. 363 
List of Crustacea Cladocera from Madison, Wisconsin, by Edward 
A. Birge (with Plate XIII). 379 
PROCEEDINGS. 
Report of the Secretary — 
Ninteenth Regular Meeting, 1888. 403 
Twentieth Regular Meeting, 1889... 406 
Twenty-first Regular Meeting, 1890. 409 
Twenty-second Regular Meeting, 1891. 412 
Report of Treasurer. 417 
Report of Librarian. 420 
List of Officers and Members of the Academy.. 423 
In Memoriam — 
Roland Duer Irving, by T. C. Chamberlin.. 433 
William Francis Allen, by J. D. Butler. 439 
Lucius Heritage, by H. D. Maxson. 442 
Henry Doty Maxson, by J. W. Stearns .. 445 
Authors’ Index. 447 
APPENDIX. 
List of Corresponding Societies, Institutions, etc. iii 
Charter. xi 
Constitution and By-Laws.xiii 
List of Papers in Volumes I to VIII, Inclusive, of the Transactions 
of the Wisconsin Academy of Sciences, Arts and Letters. xx 
