646 



SCIENCE. 



[N. S. Vol. III. No. 70. 



Wright, New Haven. Forty-one members 

 were present in all, nine more than at the 

 preceding annual meeting. 



In accordance with the recommendations 

 made at the preceding meeting, the morn- 

 ings were reserved for business, and the 

 scientific sessions were held in the after- 

 noon, the papers being arranged so that as 

 far as possible those upon kindred topics 

 should follow one another. The papers en- 

 tered to be read were as follows : 



I. The Geological Efficacy of Alkali Carbon- 

 ate Solution, E. W. Hilgard. 



II. On the Color Relations of Atoms, Ions 

 and Molecules, M. Carey Lea. 



III. On the Characters of the Otocalidce, 

 E. D. Cope. 



IV. Exhibition of a Linkage whose motion 

 shows the Laws of Refraction of Light, A. M. 

 Mayer. 



"V. Location in Paris of the Divelling of Ma- 

 Ins, in luhich he made the discovery of the 

 Polarization of Light by Reflection, A. M. 

 Mayer. 



VI. (1) On Experiments shoiuing that the 

 X-Rays cannot be Polarized by passing through 

 Herapathite. 



(2) 27(6 Density of Herapathite. 



(3) Formulae of Transmission of the X-rays, 

 through Glass, Tourmaline and HeraiMthite, 

 A. M. Mayer. 



VII. On the X-Rays from a Statical Cur- 

 rent piroduced by a Rapidly Revolving Leather 

 Belt, W. A. Rogers and Frederick Brown. 



VIII. Biographical Memoir of James Ed- 

 ivard Oliver, G. W. Hill. 



IX. Biograpjhical Memoir of Charles Henry 

 Davis, C. H. Davis. 



X. Biographical Memoir of George Engel- 

 mann, C. A. White. 



XI. Legislation Relating to Standards, T. C. 

 Mendenhall. 



XII. On the Determination of the Coefficient 

 of Expansion of Jessop^s Steel, between the limits 

 of 0° and 64-° C, by the Literferential Method, 

 E. W. MoRLEY and W. A. Rogers. 



XIII. On the Separate Measurement, by the 

 Literferential Method of the Heating Effect of 

 Pure Radiations and of an Envelope of Heated 

 Air, W. A. Rogers. 



XIV. On the Logic of Quantity, C. S. 

 Peirce. 



XV. Judgment in Sensation and Perception, 

 J. W. Powell. 



XVI. The Variability in Fermenting Power 

 of the Colon Bacillus under different Conditions. 

 By A. W. Peckham. (Presented by J. 

 S. Billings.) 



XVII. Experiments on the Reflection of the 

 Rontgen Rays, 0. N. Rood. 



XVIII. Notes on Rontgen Rays, H. A. 

 Rowland. 



XIX. Some studies in Chemical Equilib- 

 rium, Ira Remsen. 



XX. The Decomposition of Dlazo-cmnpounds 

 by Alcohol, Ira Remsen. 



XXI. On Double Halides containing Or- 

 ganic Bases, Ira Remsen. 



XXII. Residts of Researches of Forty Bi- 

 nary Stars, T. J. J. See. 



XXIII. On a Remarkable Neiv Family of 

 Deep-sea Cephalopoda and its bearing on Mol- 

 luscan Morphology, A. E. Veerill. 



XXIV. The Question of the Molluscan 

 Archetype, an Archi-mollusk, A. E. Verrill. 



XXV. On some Points in the Moiyhology 

 and Phytogeny of the Gastropoda, A. E. Ver- 

 rill. 



XXVI. Source of X-Rays, A. A. Michel- 

 son and S. W. Stratton. 



XXVII. The Relative Permeability of Mag- 

 nesium and Aluminum to the Rontgen Rays, 

 A. W. Wright. 



XXVIII. The State of Carbo-dioxide at the 

 Critical Temjjerature, C. Barus. 



XXIX. The Motion of a Submerged Tliread 

 of Mercury, C. Barus. 



XXX. On a Method of obtaining Variable 

 Capillary Apiertures of Specified Diameter, C. 

 Barus. 



XXXI. On a New Type of Telescope Free 

 from Secondary Color, C. S. Hastings. 



