404 



Tumuli or Barrows, 168 

 Turner's Falls, 13 



U. 



University of Leyden, 382 

 Upper Marine formation, 41, 213 

 Uranium, 185 — Green ore of, 194 

 Uranite, analysis of, 380 



V. 



Van Rensselaer Dr. J. Essay on salt, 360 

 Vases of scent, 133 



Vegetaux, sur les fossiles, analysis of, 178 

 Velocity of the Mississippij^l'T^ 

 Vesuvian, 50 



W. 



Wallace Prof J. New algebraic series, 278 



— , Theory of numerical faculties, 285 



Warwick rocking stone, 201 

 Water-burner patent, remarks on, 141 



, instrument for mcMSuriog the compression of, 195 



Webb T. H. Notice of fiuor spar, 64 



, localities of Talc and Tourmaline, 55 



Willis' lute, 392 



WoUaston Dr., remarks on the Cryophorus of, 140 



Y. 



Yale College, Geological position of, 20 

 Yectet, 378 

 Yenite, 251 



