GeneraL Papgrs: 
Safeguarding the Food and Water Supply—A Function of the 
State, E. H. S. Bailey, University of Kamsas .......0.0.2.-2.sc:cese-cse0e0--- 109 
Wireless Transmission of Messages in the Olden Time, Francis 
E. Nipher, Washington University, St. Lowis -200....2.0.2-2---see-+0- 113 
The Purpose of Science Teaching at a University, William A. 
Noyes, University of Tlinois) _..u ee 120 
Plant Ecology and its Relation to Agriculture, W. G. Waterman, 
University of Chicago 22.00.0002. ee 123 
Contribution of the College to High School Science Teaching, 
John C. Hessler, James Millikin University ...........-2...-.-ccecessseseee-- 130 
The Content of a General Science Course, J. F. Groves, Univer- 
sity of Wyoming .2:210k...-----i el 135 
Collecting Snails in the South West, James S. Ferriss, Joliet............ 137 
Papers on Botany: 
The Chestnut in IIlinois, William Trelease, University of IIlinois....143 
Dwarf Shore Floras, H. Walton Clark, U. S. Biological Station, 
Fairport, Towa .:.2::ccc:cdeccccc:hoceetsee ee e 145 
The Primrose Rocks of Illinois, H. S. Pepoon, Lake View High 
School, (Chicago °\..20.02.22.055). te 159 
Porto Rican Fungi, Old and New, F. L. Stevens, University of 
Thin iS o.oo scene bee) ee tect Seat ackce a ita bee eee er 162 
The Occurrence of Alternaria in a Characteristic Apple Spot, and 
an Apple Rot Caused by Gliocladium Viride -...0002..0......-:.scceeee-- 218 
Phyllachora as the Cause of a Disease of Corn, and a General Con- 
sideration of the Genus Phyllachora, Nora E. Dalbey, Uni- 
versity of Tilimois) .2::...22.000 230 
Some New Porto Rican Fungi, L. E. Miles, University of Illinois....249 
Notes on Cephaleuros Virescens, Ruth Higley, University of IIli- 
TIONG) oad ccpesese ceed ben bon cbdiviecend lessened bcucazs! Eat S Ned 2 eee 256 
Papers on GEOLOGY : 
The Thebes Sandstone and Orchard Creek Shale and their Faunas 
in Illinois, T. E. Savage, University of Illimois......-....-.-----oes-e- 261 
The Climatic History of Alaska from a New Viewpoint, Eliot 
Blackwelder, University of, Illinois 1 275 
The Physical History of the Upper Mississippi Valley during the 
Late Paleozoic (Abstract), Francis M. Van Tuyl, Univer- 
Sity Of Tn 018) oie ee ere 280 
