Vi CONTENTS. 



Page 

 XII. Rejoinder of Mr. Quinby to the writer of the examina- 

 tion of his Principle of Crank Motion, - 356 



XIII. Mr. Barnes's Reclamation of Unios, - - 358 



XIV. Notice of the pressure of the Atmosphere, &c. within 



the Cataract of Niagara, in a letter from Captain 

 Basil Hall, Royal Navy, F. R. S. - - 364 



XV. On the non conducting power of water in relation to 



heat ; hy W. M. Mather, - - 368 



INTELLIGENCE AND MISCELLANIES. 



I. American. 



1. Captaiu Marshall's Temporary Rudder, - 371 



2. Prof. Hall's Miscellaneous notices among the White 



Mountains, &c. - - - - 373 



3. Mr. Genet's remarks on Dr. Jones' Animadversions, 377 



4. Proceedings of the Lyceum of Natural History, New 



York, 378 



5. Tioga Coal, - - - - - 381 



6. Water Cement of Southington, Conn, communicated hy 



Mr. Thomas Lowrey, at the request of Mr. Shel- 

 don Moore, - - - - 382 



7. 8. Southern Review — Annunciation of the second part of 



Prof. A. Eaton's Report of the Geological Survey 

 on the Erie Canal, - - - 382 



9. New Haven Gymnasium, - . - - 385 



10. Protest against the admission of a power of fascination 



in Snakes, - 388 



11. New work on Ichthyology, - 390 



12. Dog Trains of the North West, with a print, - 391 



13. Measurements of Crystals of Zircon, from Buncomh, 



North Carolina ; by Charles U. Skepard, - 392 



II. Foreign. . 



1, 2. Remedy against the dangers of the inspiration of 

 Chlorine — Chemical researches on Starch, hy J. B. 

 Caventon, ----- 393 



3. Specific heat of the gases, - 394 



4, 5. The Dead Sea — Hackette and Baillet, on a phenom- 



enon exhibited by Blowing Machines. - 395 



6. Rare Insects, - 396 



7, 8. Switzerland. Education— French Institue, July 9, 1827, 397 

 9. Nature of Brome. Electric Conductibility, - 398 



10. Adulteration of Sulphate of Quinine by Sugar, by M. 



Winkler, ----- 400 



