678 INDEX 



Vol. Page 



Stroboscopic Effect, L. E. Dodd XXIII, 199; XXIV, 221 



Stromsten, Prank A., The Development of the Posterior 



Lymph Hearts of the Loggerhead Turtle XVII, 227 



The Development of Lymph Channels in Turtles by 



the Fusion of Mesenchymal Spaces XVIII, 147 



A List of Entomostraca from the Okoboji Region XXIV, 309 



The Development of Musk Glands in the Loggerhead 



Turtle XXIV, 311 



Stuhlman, Otto, Jr., On the Coefficient of Absorption of 



Photo-electrons in Silver and Platinum XXV, 61 



Stull, W. N., Contribution to the Study of Reversible Re- 

 actions VIII, 110 



Sub-Aftonian Till Sheet in Northeastern Iowa, S. W. 



Beyer IV, 58 



See Drift. 

 Succinic Acid, Solubility and Heat of Solution of, H. E. 



Fowler and J. N. Pearce XXIV, 523 



Succinidae, See Loess. 



Sudan Grass Hay, Composition and Digestibility of, W. G. 



Gsessler and A. C. McCandlish XXV, 479 



Sulfofication, See Soils. 

 Sulphuric Acid, See Copper. 



Summary of Discussion (on Pre-Kansan), S. Calvin IV, 66 



Summers, H. E., A Generic Synopsis of the Nearctic Pen- 



tatomidse VI, 40 



Some Problems of Heredity and Evolution, Presi- 

 dential Address, 1902 X, 26 



Memorial of Mrs. Emma Pammel Hansen XII, XI 



See Pammel, Summers and Ross. 



Sunflecks, W. H. Davis XXI, 101 



Sun-Spots, See Solar Surface. 



Survey, Iowa Geological, Work of, Presidential Address, 



1909, S. Calvin XVI, 11 



Swine, Appetite of, J. M. Evvard XXII, 375 



Inheritance of Rudimentary Mammae in, E. N. 



Wentworth XXI, 265 



See Calcium. 



Sylvan Beach, New York, Sand of, N. Knight XXI, 129 



Sylvester, R. H., Some Standardizing Tests of Stern's 



Tone Variator XVII, 195 



Synclinorium, Prairie, C. R. Keyes XXII, 268 



Syndactylism, Inheritance of, H. Albert XXII, 17 



T 



Tama County, See Drift. 



Tan-plants, See Dye-plants. 



Tectonics, See Great Basin. 



Teeth, See Cat. 



Telescope, Aperture of, and Image Obtained, F. Vorhies.. XX, 283 



