46 



SCIENCE. 



[Vol. XIX. No. 468 



that such legislation had been secured. The following papers 

 were presented: Some Suggestions to Teachers of Science or 

 Mathematics in High Schools, by T. C. Van Nuys; Notes on Nu- 

 merical Radices, by C. A. Waldo ; The Kankakee and Pure Water 

 for North-western Indiana and Chicago, by J. L. Campbell; Biologi- 

 cal Surveys, by John M. Coulter ; The Distribution of Ttopical Ferns 

 in Peninsular Florida, by L. M. UnderHOod; Unused Forest Re- 

 sources, by Stanley Coulter ; Preliminary Notes on the Geology of 

 Dearborn County, Ind., by A. J. Bigney; Jefferson County Cys- 

 tidians, Hudson River Fossils of Jefferson County, Ind., and The 

 Upper Limit of the Lower Silurian at Madison, Ind., by George 

 C. Hubbard ; Variations in the Dynamical Conditions During the 

 Deposit of the Rock Beds at Richmond, Ind. (by title), by Joseph 

 Moore ; The Relation of the Keokuk Groups of Montgomery County 

 with the Typical Locality, and Comments on the Description of 

 Species, by C. S. Beachler; On a Deposit of Vertebrate Fossils in 

 Colorado by Amos W. Butler; Topographical Evidence of a Great 

 and Sudden Diminution of the Ancient Water Supply of the 

 Wabash River (by title), and Source of Supply to Medial Moraines 

 Probably from the Bottom of the Glacial Channel (by title), by 

 J. T. Campbell; Notes on a Kansas Species of Buckeye, by W. A. 

 Kellerman; On the Occurrence of Certain Western Plants near 

 Columbus, Ohio, by Aug. D. Selby; Preliminary Notes on the 

 Genus Hoffmanseggia, by E. M. Fisher; Preliminary Paper on the 

 Flora of Henry County, Ind. (by title), by T. B. Redding and Mrs. 

 Rosa Redding Mikels; A New Microtome, by George C. Hubbard ; 

 Notes on the Organogeny of the Compositee (by title) by G. W. 

 Martin; Notes on the Development of the Archegonium and Fer- 

 tilization in Tsuga Canadensis and Pinus Sylvestris, by D. M. 

 Mottier; Strange Development of Stomata upon Carya Alba Caused 

 by Phylloxera, by D. A. Owen; Development of the Sporangium 

 and Apical Growth of Stem of Botrychium Virginianum, by C. L. 

 Holtzman; The Flora of Mount Orizaba, by H. E. Seaton; An 

 Apparatus for Determining the Periodicity of Root Pressure, by 

 M. B. Thomas; Condensation of Acetophenone with Ketols by 

 Means of Dilute Potassium Cyanide, Condensation of Acetone with 

 Benzoin by Means of Dilute Potassium Cyanide, and Pyrone and 

 P^ ridone Derivatives from Benzoyl Acetone, by'Alexander Smith; 

 Carbonic Acid in the Urine, by T. C. Van Nuys and R. E. Lyons; 

 Results of Estimations of Chlorine in Mineral Waters, by Vol- 

 hardt's Method, by Sherman Davis; The Sugar Beet in Indiana, 

 and Forms of Nitrogen for Wheat, by H. A. Huston; A CoppeT 

 AmmoniumO.xide, by P. S. Baker; Di-benzyl Carbinamine.and The 

 Character of Well Waters in a Thickly Populated Area, by W. A. 

 Noyes ; Laboratory and Field Work on the Phosphate of Alumina, by 

 H. A. Huston; Recent Archasological Discovei'ies in Southern Ohio, 

 by Warren K. Moorehead; Photographing Certain Natural Objects 

 without a Camera, by W. A. Kellerman; Recent Methods for the 

 Determination of Phosphoric Acid, by H A. Huston; The Digesti- 

 bility of the Pentose Carbohydrates (by title), and The Action of 

 Phenyl-Hydrazin on Furfurol (by title), by W. E. Stone; A Graphi- 

 cal Solution of Equations of Higher Degree for both Real and 

 Imaginary Roots, and On Some Theorems of Integrations in Qua- 

 ternions, by A. S Hathaway; The Section of the Anchor Ring, 

 by W. V. Brown; A Note on the Early History of Potential Func- 

 tions, by A. S. Hathaway; Some Geometrical Propositions, by C. 

 A. Waldo; Some Suggested Changes in Notation, by R. L. Green; 

 An Adjustment for the Control Magnet on a Mirror Galvanometer, 

 and A Combined Wheatstone's Bridge and Potentiometer, by J. P. 

 Naylor; Hysteresis Curves for Mitis and Other Cast Iron, by J. E. 

 Moore and E. M. Tingley; Heating of a Dielectric in a Condenser 

 (preliminary note), by Albert P. Carman ; Science and the Colum- 

 bian Exposition, by J. L Campbell; Exploration of Mount Orizaba, 

 by J. T. Scovell; Entomologizing in Mexico, by W. S. Blatchley; 

 Distribution of Certain Forest Trees (by title), and Cleistogamy in 

 Polygonium (by title), by Stanley Coulter; The Cactus Flora of 

 the South-west (by title), by W. H. Evans; Methods Observed in 

 Archaeological Research (by title), by Warren K. Moorehead ; The 

 Prehistoric Earthworks of Henry County, Ind. (by title), by T. B. 

 Redding; A Review of the Holconotidse, by A. B. Ulrey ; Some 

 Additions to the State Flora from Putnam County, and Connect- 

 ing Forms Among the Polyporoid Fungi, by L. M. Underwood; 

 On LeConte's Terrapins, Emys concinna, and E. floridana (by 



title), The Eggs and Young of Certain Snakes, and Observations 

 on the Turtles of the Genus Malochlemys (by title), by O. P. Hay; 

 The Gryllidae of Indiana, by W. S. Blatchley; The Outlook in the 

 Warfare Against Infection (by title), by Theodore Potter; Our 

 Present Knowledge Concerning the Green Triton, and The Proper 

 Systematic Name of the Prairie Rattlesnake, by O. P. Hay; The 

 Blind Crayfishes of Indiana, and Remarks on the Crustaceans of 

 Indiana, by W. P. Hay; Notes on Elaps fulvus, by A. J. Bigney; 

 Some Observations on Heloderma Suspectum, by D. A. Owen; 

 Some Observations on Photomicrography, by D. W. Dennis ; Dis- 

 eases of the Sugar Beet Root, by Miss Katherine E. Golden; 

 Buffalo Gnats (Simulium) in Indiana and Illinois, by F. M. Web- 

 ster; The Development of the Viviparous Fishes of California (by 

 title), and Recent Additions to the Icthjological Fauna of Califor- 

 nia (by title), by Carl H. Eigenmann ; Some Observations on In- 

 diana Birds, by R. Wes McBride; On Indiana Shrews, and Notes 

 on Indiana Birds, by Amos W. Butler; The Scales of Lepidoptera, 

 by M, B. Thomas ; The ^geria of Central Ohio, by D. S. Kellicott ; 

 Some Insects of Tasmania, and Early Published References to In- 

 jurious Insects (by title), by F. M. Webster; The Continuity of 

 the Germ Plasm in Vertebrates (by title), Biological Stations (by 

 title). The Eyes of Blind Fishes (by title), and On the Presence of 

 an Operculum in the Aspredinidse (by title), by Carl H. Eigen- 

 mann ; Notes on Indiana Arididce (description of one new species), 

 by W. S. Blatchley; The Relation of Neucleaplasm to Cytoplasm 

 in the Segmenting Egg (by title), by C. H. Eigenmann and R. L. 

 Green; Plant Zones of Arizona (by title), by D. T. McDougal; Re- 

 lation of Available Enzym in the Seed to Growth of the Plant, and 

 The Potato Tuber as a Means of Transmitting Energy, by J. C. 

 Arthur; Contributions to a Knowledge of the Grain Toxoptera 

 (Toxoptera graminum) (by title), by F. M. Webster. A commit- 

 tee was appointed to arrange tor publishing the proceedings of this 

 meeting. Twenty active meiibers were elected. 



— The College of Physicians of Philadelphia announces that the 

 next award of the Alvarenga prize, being the income for one year 

 of the bequest of the late Senor Alvarenga, and amounting to 

 about one hundred and eighty dollars, wUl be made on July 14, 

 1892. Essays intended for competition may be upon any subject in 

 medicine, and must be received by the secretary of the college on 

 or before May 1, 1892. It is a condition of competition that the 

 successful essay or a copy of it shall remain in possession of the 

 college. 



— A complete series of soundings has been taken over the whole 

 bed of the Lake of Geneva, and a report is given in Cosmos, Vol, 

 X. No. 9, by the engineer, M. A. Delebecque. The length of the 

 lake is 45 miles and its greatest breadth 8i miles. Its area is 233 

 square miles, and the height of its surface above sea-level about 

 1,230 feet. The bed of the lake is divided into two distinct parts, 

 the Great Lake between Yvoire and Villeneuve, and the Little 

 Lake between Yvoire and Geneva. The bottom of the Great 

 Lake is nearly level over an area of 17J square miles, and lies at a 

 depth of 169 fathoms. The slopes are more sudden at the eastern 

 end, where the mountains descend more precipitously to the 

 water, the inclination being 48 degrees between Saint-Gingolph 

 and Bouveret, and 56 opposite the Castle of Chillon. The River 

 Rhone has made a deep channel, lined with dykes, in the bottom 

 of the lake. This channel extends in a tortuous course for a dis- 

 tance of 3i miles from the mouth of the river. Near its com- 

 mencement it has a depth of 190 feet, and beyond Saint-Gingolph 

 it is still 30 feet deep, where the depth of the lake is 109 fathoms. 

 Its formation is due to the large quantities of alluvium brought 

 down by the Rhone, and to the lower temperature of its waters, 

 which causes them to flow under the water's of the lake. The 

 Dranse, which brings down gravel and stones, as well as mud, to 

 the lake, has formed what is known as a torrential delta at its 

 mouth, in the form of a cone, continually advancing further and 

 further into the lake. The Little Lake consists of four depressions, 

 separated by bars of small elevation, projecting from the points 

 of Nernier, Messery, Hermance, and Bellerive. The depths of 

 these ba.sins are 249, 229, 229, and 164 feet, respectively. At the 

 bottom of this portion of the lake are to be found traces of the 

 passage of the ancient Rhone glacier which extended to Lyons. 



