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Tar-Forming Temperatures of American Coals, charts, 20 minutes 
ene ser ern Ey nan oh oer ic Sorat 's Naver ibst On as ong Te TAR ays ©. C. Berry. 
GEOGRAPHY. 
Shawnee Mound, Tippecanoe County, A Glacial Alluvial Cone, 
charts and photographs, 10 minutes............. William A. McBeth 
GEOLOGY. 
Stratigraphic Correlation of the Outcrop at Spades, Indiana, 
fl DSTUUN CC Sere eee ane teen ee eres ere titel rae les H. N. Coryell 
Pennsylvania Fossil Plants of the Bloomington Quadrangle, 
5), TORAGRU SSIS as Peso hes eh ete Mc RNA REY Reh PRT emerge J. F. Jackson 
Preliminary Geological History of Dearborn County, 10 minutes 
», aaah ois BR Fe eae cae eee oe a on am ag nen teen A. J. Bigney 
Notes on the Cause of Asterism in ‘‘Starolite’’ (Asteriated Quartz), 
charts and specimens, 10 minutes.................... Frank B. Wade 
The Mississippian Section of Monroe County, charts, 15 minutes 
Perth as4 : Pe i et eae ee Beta oy PORNO Eee eV SES EO UG 
The Flatwoods Region of Owen and Monroe Counties, Indiana, 
PRIME SMP Rae ern. One ere ae nr es yk ne ae Clyde A. Malott 
MATHEMATICS. 
Mechanical Device for Testing Mersenne Numbers for Primes, 
OMMUMULCS aes tease eee See A ane oto! La Thomas li. Mason 
Some Properties of Binominal Coefficients, 20 minutes.....A. M. Wtwenyon 
METEOROLOGY. 
The Watertown, 8. D., Tornado of June 23, 1914, 10 minutes 
Rep onal ene seme _...3. Gladden Hutton 
PHYSICS. 
A New Lantern and Projector, lantern, 10 minutes......Arthur L. Foley 
Some Text Book Inconsistencies, 5 minutes.............4 Arthur L. Foley 
The Mechanism of Light and Heat Radiations, 10 minutes 
ji ep ecb, cok, cath toh CME Br OE See ee James EK. Weyant 
A Simple Form for the Carey Foster Bridge, lantern, 5 minutes 
re ae et Ve oa ie lsboad than eer Lae Nawlor 
The Change of the Radio Activity of Certain Springs, lantern, 
(0) saab), Aas owe OLR g oie ee oa ee RUS R. R. Ramsey 
Radio Activity of Beane Water, lantern, 10 minutes....... R. R. Ramsey 
A Radio-Active Electroscope, lantern, 5 minutes........ Edwin Morrison 
