48. 
Cultivating and Breeding Medicinal Plants, lantern, 
PA) BETTING ES eet a ek oe ede Fe hs state ies sce .Fred A. Miller 
Some Large Botanical Problems, 10 minutes.............. J. C. Arthur 
ZOOLOGY. 
The Alba Gehre Collection of Birds’ Eggs in the Museum 
of Purdue University, 10 minutes................. Howard E. Enders 
A Study of the Maturation Period in the Mole-Cricket, blackboard, 
i((0) TART RS Sk ie ah oe SOO OR a a el ee RRR er ear fy F. Payne 
Note on a Peculiar Nesting Site of Chimney Swift, 
F) TUS oae ho ob sol heey Ben ee ee eee ics Glenn Culbertson 
Mosaics in Drosophila Ampelophila, chart, 5 minutes..Horace M. Powell 
New Mutations in the Genus Drosophila and their Behavior 
Mmuvercauy, chant, 1Ominutes.. ......22... een: ... Roscoe R. Hyde 
Notes on Indiana Earthworms, 10 minutes............ H. V. Heimburger 
Insects of the Between-Tides Zone, 30 minutes........... Chas. H. Arndt 
Regeneration in Sagartia, 5 minutes........................ D. W. Davis 
The Relation of Birds to Aquatic Life as Exemplified by 
Observation and Studies made at Lake Maxinkuckee, 
113} TROON TG Me Be ae eo Ae ee _............Barton W. Evermann 
The Reptiles and Batrachians of the Lake Maxinkuckee 
VE CTON 20 MMINIMNGC See eae a. tcc isshed ewok Barton W. Evermann 
A Physical and Biological Survey of Lake Maxinkuckee, 
MMIC apace Ae yrs ans ea ae ee ahs .....Parton W. Evermann 
CHEMISTRY. 
The Quantitative Determination of Copper, 5 minutes..W. M. Blanchard 
The Alundum Crucible as a Substitute for the Gooch 
Cmiciple souminutes. er nia seeks Seis Were _.George L. Clark 
Some Recent Work in Dairy Chemistry, 20 minutes......George Spitzer 
Analysis of Zirconium Minerals, 10 minutes................ James Brown 
Correlation of High School and College Chemistry, 
PAU) SGWHAYS (21s Peete Sea ee, hi ee Bane Pein Pee ... James Brown 
Chemical Composition of Virgin and Cropped Indiana Soils, 
LOmminubes.. .4s0ee. Hoe A RNR T Se (pak: MON ......5. D. Conner 
Sewage Disposal, lantern, 15 minutes............ ...Charles Brossmann 
Extension of Empirical Curve by the Addition of Estimated Values 
to a Series of Observations, charts, 20 minutes........Albert Smith 
