624 INDEX 



Vol. Page 

 Bridges, Selenium, Construction of, E. O. Dieterich XXI, 257 



Bromic Acid, Action on Metals, W. S. Hendrixson XIII, 179 



Bromides, New Double, N. Knight IX, 127 



Bromus, Leaf Anatomy of, Emma Sirrine IV, 119 



See Lolium. 

 Brook, Small, Macroscopic Fauna of, D. M. Brumfiel... XXII, 363 

 Brown, F. A., A Contribution to Madison County Geology XIII, 203 

 Brown, F. C, Evidence Favoring the Radioactive Disinte- 

 gration of Sodium as an Element XIX, 175 



The Effect of Rupture by Abrasion on the Electrical 



Conductivity of Selenium XIX, 179 



A New Apparatus for Measuring Small Intervals of 



Time Independent of Clock or Chronograph XIX, 185 



The Similarity of Electrical Properties in Light- 

 positive Selenium to those in Certain Crystal Con- 

 tacts ■ XX, 261 



A Practical Electrical Method of Measuring the Dis- 

 tances Between Parallel Conducting Planes, with 

 Application to the Question of the Existence of 



Electron Atmospheres XX, 271 



The Crystal Phonopticon in Its Adaptation to Enable 



the Blind to Read the Printed Page XXII, 317 



Bibliography of Literature Bearing on the Light- 

 sensitiveness of Selenium XXIII, 241 



and Noll, Waldemar, Why Hot Water Pipes in House- 

 hold Plumbing Burst More Frequently than Cold 



Water Pipes XXIII, 237 



See Sieg and Brown. 

 Brown, J. C, See Weems and Brown; Weems, Brown and 



Myers. 

 Brown, Maud A., The Influence of Air Currents on 



Transpiration XVII, 13 



Brown, P. E., and Kellogg, E. H., Sulfofication in Soils.. XXI, 17 



Brown Thrasher, Home Life of, I. N. Gabrielson XX, 299 



Brumfiel, D. M., Macroscopic Fauna of a Small Brook. . . . XXII, 363 



The Influence of Floods upon Animals XXV, 155 



Bruner, PI. L., Aboriginal Rock-mortars I, If. 64 



Buchanan, Robert Earle, A Contribution to our Knowledge 



of the Development of Prunus americana XI, 77 



Notes on a Thermophilic Bacillus XII, 69 



Notes on the Algae of Iowa XIV, 47 



See Pammell, Buchanan and King. 

 Buchanan County, See Buchanan Gravels. 

 Buchanan Gravels, an Interglacial Deposit in Buchanan 



County, S. Calvin Ill, 58 



of Calvin and lowan Valley Trains, M. M. Leighton. . XXIV, 86 



Buchholz, John Theodore, Sedges of Henry County XX, 103 



Buckley, Margaret, See Norris and Buckley. 



Building Materials, Well Known, N. Knight XXII, 213 



