506 



SCIENCE. 



[N. S. Vol. XV. No. 378. 



' Electrodeless Conduction in Electrolytes': 

 Gael Heking, Philadelphia, Pa. 



' On the Electrolysis of Sodium Nitrate and the 

 Composition of the Developed Gases': C. W. 

 VoLNEY, Ph.D., Keyport, N. J. 



Professor Chas. A. Doeemus, M.D., Ph.D., 

 Subject to be announced. 



Friday afternoon, April 4, 2 p.m., at the 

 Jolin Harrison Laboratory. 



' Current Electro-chemical Theories ' : Professor 

 Louis Kahlenbeeg, Ph.D., University of Wis- 

 consin, Madison, Wis. 



'A Zinc-Bromine Storage Battery ' : Herbert 

 H. Dow, Midland, Mich. 



' Continuous Electrolysis of Solutions of 

 Metals ' : N. S. ICbith, Ph.D., New York City. 



'A Method of Electrolytic Production of Zinc 

 from its Ores': Samuel S. Sadtlee, Philadelphia, 

 Pa. 



' The Electrolytic Rectifier ' : Professor C. E. 

 Buegess, University of Wisconsin, and Carl 

 Hambuechejst, Madison, Wis. 



' On the Relative Speed of the Ions in Solutions 

 of Silver Nitrate in Pyridine and Aceto-nitrile ' : 

 Herman [schlundt, Ph.D., Madison, Wis. 



' Fall of Potential in Electrolytes ' : Cael Hee- 

 ING, Philadelphia, Pa. 



' Caustic Alkalies and Chlorine by the Dry 

 Electrolytic Process ' : Chas. E. Ackee, Niagara 

 Falls, >J. Y. 



Friday evening, April 4, after 8 p.m., at the 

 Manufacturer's Club, 1409 Walnut Street. 

 Informal reception. 



Saturday morning, April 5, 9 a.m., at the 

 John Harrison Laboratory. Reading and 

 discussion of the following papers: 



' On a New Type of Electrolytic Meter ' : KoN- 

 EAD NoRDEN, Ph.D., New York City. 



' The Reversible Copper O.xide Plate ' : Woolsey 

 MoA. Johnson, Hartford, Conn. 



'A Thermodynamical Note on the Theory of the 

 Edison Battery': E. P. Roebee, Ph.D., Philadel- 

 phia, Pa. 



' Electrolysis of an Aqueous Solution by Alter- 

 nating Current ' ; Professor Jos. W. RichaedS, 

 Ph.D., Lehigh University, Bethlehem, Pa. 



' The Atom of Electro-chemistry ' : Arvid 

 ReuteUdahl, Providence, R. I. 



Saturday afternoon will be devoted to visits 

 to places of interest. 



THE geological SOCIETY OF WASHINGTON. 



At the meeting of the Society on February 

 26, the first paper, by Mr. T. W. Vaughan, was 

 entitled 'Earliest Tertiary Coral Reefs in the 

 Antilles and United States.' Mr. Vaughan 

 made a few remarks in order to indicate when, 

 during Tertiary time, the physical conditions 

 in the regions mentioned in the title of his 

 communication first became suitable for the 

 formation of coral reefs. A few species of 

 reef-building genera occur in the Midway 

 (basal Eocene) beds of Alabama, and taken as 

 a whole the Eocene corals of the United States 

 characterize only moderately deep or shallow 

 water; but strictly speaking, no Eocene coral 

 reefs are known in the United States. Reef- 

 building genera occur in the Vicksburgian 

 (Lower) Oligocene at Vicksburg, Mississippi. 

 The temperature of the water was at least sub- 

 tropical and the depth was not great, probably 

 not too great for the formation of reefs; but 

 some other condition, probably such as muddi- 

 ness of water, prevented their formation. The 

 Coral limestone at Salt Mountain, Alabama, 

 is a coral reef limestone, but its precise strati- 

 graphic position has not been determined. It 

 is either uppermost Lower Oligocene or basal 

 Upper Oligocene. The Upper Oligocene in the 

 United States was initiated by an extensive 

 development of coral reefs. They occur in 

 southwestern Georgia along the Flint River, 

 the Tampa siles beds of Tampa, Florida, and 

 at numerous other localities in Florida. The 

 fauna is rich in genera, species and individ- 

 uals. Reefs of the same age are very abund- 

 ant in the Antilles. They occur in Cuba in 

 the vicinity of Havana, Matanzas, Santiago 

 and other places. They probably are present 

 in the island of Haiti. Other islands in which 

 Upper Oligocene rocks exist are Porto Rico, 

 Antigua and Arube (Dutch West Indies). 



There are no Miocene coral reefs in the 

 L^nited States, the temperature of the water 

 being too cold. The species of corals known 

 grew in water only a few fathoms in depth. 

 It is not at present known whether or not 

 Miocene reefs existed in the West Indies. 

 Apparently during Miocene time the Antilles 

 stood much higher than at present; therefore 



