viii Contents. 



Number 264. 



Page. 



Aim. LV. — Experimental Comparison of Formulae for Total 

 Radiation between 15° C. and 110° C; by W. LeConte 

 Stevens 431 



LVL— Notes on Silver; by M. C. Lea 444 



L VII. — Notes on Silver Chlorides ; by M. C. Lea 446 



LVTII. — Remarkable Fauna at the Base of the Burlington 



Limestone in Northeastern Missouri; by C. R. Keyes_ 447. 

 LLX. — Glacial Pot-holes in California ; by H. W. Turner 



(With Plate IX)... 453 



LX. — Lavas of Mount Ingalls, California ; by H. W. Turner 455 

 LXI. — Method for the Quantitative Separation of Barium 

 from Strontium by the action of Arnyl Alcohol on the 



Bromides; by P. E. Browning 459 



LXII. — Note on the method for the Quantitative Separation 

 of Strontium from Calcium by the action of Amyl Alco- 

 hol on the Nitrates ; by P. E. Browning 462 



LXIII. — Study of the Formation of the Alloys of Tin and 

 Iron with descriptions of some new. Alloys ; by W. P. 

 Headden 464 



LXIV. — Notes on the Cambrian Rocks of Pennsylvania and 

 Maryland from the Susquehanna to the Potomac; by 

 C. D. Walcott . 469 



LXV. — Volcanic Rocks of South Mountain in Pennsylvania 



and Maryland; by G. H. Williams. (With Plate X). 482 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Temperature of Steam from Boiling' Salt-solutions, 

 Sakurai, 496. — Allotropism of Amorphous Carbon, Luzi: Amorphous Boron, 

 Moissan, 497. — Atomic Mass of Boron, Abraham. : Absorption power of 

 metals for the Energy of Electrical waves, Bjerknes: Electrical Oscillations, 

 M. Zehnder, 498. — Joints in Magnetic Circuits, Ewing: Measurement of high 

 temperatures, Holborn and Wien: Color Photography, Lippmann: Electrical 

 Resistance of Metals at Low Temperatures, Dewar and Fleming, 499. 



Geology and Natural History — Les Regions Invisibles du Globe et des Espaces 

 celestes: Eaux Souterraines, Tremblements de Terre. Meteorites, A. Daubree, 

 499. — Pleistocene History of Northeastern Iowa, W. J. McGee: Geological 

 Survey of Iowa: Tiefencontacte an den intrusiven Diabasen von New Jersey, 

 A. Andreae and A. Osann : Eleolite-Syenite of Litchfield, Me. and Red Hill, 

 N. H., W. S. Batlet, 500. — Gems and Precious Stones of North America, G. 

 F. Kuxz: Muciferous System of Lanrinariaceae, Guignard; Researches on 

 Multiple Buds, W. Russell, 501. — Artificial intracellular Crystallization, E. 

 Belzung: Aeration of Solid Tissues, H. Devaux, 502. — Bibliotheca Zoologica, 

 II, 504. 



Miscellaneous Scientific Intelligence — National Academy of Sciences, 504. 



Index to Yol. XLIV, 505. 



Erratum. — Page 468, line 11 should read: difficultly soluble or insoluble, etc, 



