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CONTENTS, 



XV. Effect of a contracted space in obstructing the Vibrations 



Page. 



158 



168 





of a Mercurial Pendulum; by George Baker, - 156 



XVI. Description of Fossil Footprints in the New Red Sand- 



stone of the Connecticut Valley ; by James Deane, M. D. 

 (With a plate,) 



XVII. Reply to a Notice of Shepard's Mineralogy, with various 



Mineralogical Observations; by Prof. Charles Upham 

 Shepard, M. D., 



XVIII. Abstracts of the Researches of European Chemists ; by 



J. Lawrence Smith, M. D., - 181 



XIX. Bibliographical Notices : — On Dinornis, an extinct Genus 



of tridactyle Struthious Birds, with descriptions of por- 

 tions of the skeletons of six species, which formerly ex- 

 isted in New Zealand. By Prof. Owen, M. D., F. R. S., 

 Z. S., &c, 194. — Ehrenberg's Observations on the Fos- 

 sil Infusoria of Virginia and Maryland, and comparison 

 of the same with those found in the Chalk Formations 

 of Europe and Africa, 201.— The Botany of the Ant- 

 arctic Voyage of H. M. discovery ships Erebus and 

 Terror, in the years 1839 — 1843. By Joseph Dalton 

 Hooker, M. D., R. N., F. L. S., 204.— Sir W. J. Hook- 

 er's Species Filicum, 205. — Dr. Maout's Lemons Elemen- 

 taires de Botanique, 206. — Martius's Systema Materia 

 Medicse Vegetabilis Brasiliensis, 207. — Shortrede's Log- 



arithmic Tables, 208. — McCartney's Principles of the 

 Differential and Integral Calculus, and their applications 

 to Geometry, 209, — Thomson's Elements of Geometry, 

 on the basis of Dr. Brewster's Legendre : New York Ge- 

 ological Survey, 210. — United States Exploring Expedi- 

 tion, 211. — Prof. J. F. W. Johnston's works on Agricul- 

 tural Chemistry, 212. — Mulder's Chemistry of Animal 

 and Vegetable Physiology : Bronn's Handbuch einer Ges- 

 chichte der Natur, 213. — Draper's Treatise on the Forces 

 which produce the Organization of Plants : Downing's 

 Treatise on the Theory and Practice of Landscape Gar- 

 dening, 214. — Guy's Principles of Forensic Medicine : 

 Hatfield's American House Carpenter, 215. 



Miscellanies. — Prof. Henry's Experiments on Soap Bubbles, 215. 



Fossil Footmarks in Strata of the Carboniferous Series in 



Westmoreland 



Mason 



ite of Dr. Jackson, 218.— Tenorite : Sillimanite: Mr. Phil- 

 lips's Mineralogical Collection: Faye's Comet, 219.— Note 

 from Dr. Hare, correcting an error in his Strictures on Prof. 

 Dove's Law of Storms : The Southern Journal of Medicine 

 and Pharmacy, 220. 



