Index. yA 
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PAGE 
Sulphur Dioxide a Source of Voleanic Sulphur. Jacob Papish...... 170 
Soil Survey of Cass County, Indiana. Colonzo C. Beals............ 186 
A Synopsis of the Races of the Guiana Flycatcher. Harry C. Ober- 
lOIABIE. oo % oto receecteso. oe cas Baca hc ORMOND EAN a Gy Dc EEC NONE ROPER ii nen Caen 304 
Sulzer, Elmer G. Erosional Freaks of the Saluda Limestone...... 309 
Sulzer, Elmer G. Remnant Monument Near Madison............. 310 
Smith, C. M. Some Contributions of Physical Science to Military 
TE SHICHGINC Naa Nickey ore Soca see oROClas Gr Check mises Ok aac EE Oa Ne ee ORS eae 320 
ae 
Timmons George D., In Memoriam. L. F. Bennett................ 719 
Time to Incubate Petri Plates, The Length of. H. A. Noyes, Edwin 
Worotiean dere ALT CKEttcnss crater dele hort eoensh ine ls asi abe sitar es 102 
PETE OOGamhy Dean MEsr Oia Vie diy GOLEM ari se icheederslel allege cleus Ghelaieneneta witha 258 
Somenaurees: of indianan) Hy. VAmdre WS swe siecesye cle susveicere alee sleet 261 
V 
Voight, Edwin. Length of Time to Incubate Petri Plates......... 102 
The Velocity of Sound Waves in Tubes. Arthur L. Foley.......... 205 
W 
Wanllianncona Hse enesidenit Ss wAGdEesst is ciusceeckel sale cpersicie nisienceness 45 
Weatherwax, Paul. Method of Teaching Diffusion and Osmosis.... 88 
Waterman ubhersDana., Arthur is Moleyacsq.s.0 acces aces « 215 
Walsones@has: 5. the Copepod) Parasites, sc. -w4-. css sachs 230 
