CONTENTS 
Page 
Geology. — Metaliferous Laterite in New Caledonia . . By W. M. Davis 275 
Anatomy. — A Comparison of Growth Changes' in the Nervous System of the 
Rat with Corresponding Changes in the Nervous System of Man . . . 
By Henry H. Donaldson |280 
Zoology. — Variation and Heredity During the Vegetative Reproduction of 
Arcella dentata By R.W. Hegner 283 
Geology. — The Importance of Nivation as an Erosive Factor, and of Son. 
Flow as a Transporting Agency, in Northern Greenland 
By W. Elmer Ekblaw 288 
Mathematics. — On the «-Holomorphisms of a Group . . . By G. A. Miller 293 
