Art, V. 
VI. 
VII. 
Wii3; 
IX, 
XI. 
XII, 
XITI. 
CONTENTS, 
Observations on the Gradual Changes that the 
Human Races appear destined to pass through, 
On the Probable Direful Consequences from the 
Intermingling of Human Races, : 
The Primitive Diversity and Number of Animals 
in Geological Times. By L. Acassiz, Profes- 
sor of Zoology and Geology in the Lawrence 
University at Cambridge, Massachusetts, 
On the Artificial Formation of Minerals, 
On the Influence of Undulating or Hilly Ground 
in checking Currents of Wind. By Ricuarp 
Avie, Esq., Liverpool. Communicated by the 
Author, . : ‘ ; > 
. Prize Subjects proposed by the Society of Sciences 
at Harlem for the year 1856, . 
Researches on the Artifical Production of Mi- 
nerals, belonging to the family of Silicates and 
Aluminates, by the reaction of Vapour on 
Rocks. By M. Davusree, 
Picci Dharinle State of Geology, 
Notice of some Ancient Indian Mining Tools, 
found in the Copper Districts of Lake Superior. 
By WiuiAM Jory Henwoop, F.R.S., F.G.S., 
Member of the Geological Society of France ; 
Corresponding Member of the Lyceum of Na- 
tural Ilistory, New York, . 
PAGR 
267 
269 
O71 
292 
300 
304 
307 
313 © 
32 
