CONTENTS. V 



Page. 



XIV. On a Zeolitic mineral (allied to Stilbite) from the Isle of 

 Skye, Scotland ; by J. W. Mallet, Ph.D., - - - 179 



XV. On the Application of the Mechanical Theory of Heat to 



the Steam Engine ; by R. Clausius, .... 180 



XVI. Statistics of the Flora of the Northern United States; by 

 Asa Gray, 204 



XVII. Letter on the Museum of Practical Geology of Great 

 Britain ; by Sir Roderick I. Murchison, • - - 232 



XVIII. Remarks on the Genus Tetradium, with Notices of the 

 Species found in Middle Tennessee ; by Prof. J. M. Saf- 

 ford, A.M., - - - - - - - - - 236 



XIX. A new Fossil Shell in the, Connecticut River Sandstone ; 



by E. Hitchcock, Jr., 239 



XX. On the Eruption at Hawaii; by Rev. Titus Coan, - - 240 



XXI. On the Purification of Amorphous Phosphorus ; by M. Er- 

 nest Nickles, - 244 



XXII. Third Supplement to Dana's Mineralogy; by the Author, 246 



XXIII. Correspondence of M. Jerome Nickles — Academy of 

 Sciences — Dearth of M. Binet: Agricultural Universal Exhi- 

 bition : Fecula of the Horse-chestnut, 264. — Astronomy : 

 View of a part of the surface of the Moon, 265. — Meteor- 

 ological System of France, 266. — Inundations : Electricity 

 — Substitute for the copper wire in the construction of He- 

 lices, 267. — Effects with Ruhmkorff's Apparatus of Induc- 

 tion : Electric Chronometers: Gas and Steam Manometer 

 Alarm : On a Cause of Atmospheric Electricity, 268.- — 

 Bibliography, 269. 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — Some experiments in Electro physiology, by Prof. Matteucci, 

 270.— Selenium : Iodine, 271. 



Mineralogy and Geology. — Meteoric Iron of Thuringia, 271. — Meteoric Iron of Cape of 

 Good Hope : Meteoric Stone of Mezo-Madaras in Siebenburg : On the Volcanoes of 

 Southern Italy, 272.— On the Isthmus of Suez, by M Renaud, 273.— On the Mines of 

 Mineral Coal in Peru, by M. E. de Rivero, 274.— Waters of Lake Ooroomiah, by 

 Henry Witt, 276. — On the Koh-i-Noor Diamond, 278. — On the origin of Greensand 

 and its formation in the Ocean of the present epoch, by Prof. J. W. Bailey, 280 — 

 [See also, p. 296 ] 



Botany and Zoology. — Wild Potatoes in New Mexico and Western Texas, 284.— Notes 

 on Palaeozoic Bivalved Entomostraca : Cumse, 235. — Insecta Maderensia, or Insects 

 of the Maderian Group, by T. Vehnon Wollaston, MA., F.R.S. : On the Variation 

 of Species with especial reference to the Insecta, followed by an inquiry into the Na- 

 ture of Genera, by the same, 236.. — On the Fresh water Entomostraca of South 

 America, by John Lubbock, Esq., F.Z.S., 289. 



