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CONTENTS 
The 'Homing Habits' of the Pulmonate Mollusk Onchidium 
By Leslie B. Arey and W. J. Crozier 319 
Growth and Duration of Life of Chiton Tuberculatus By W.J. Crozier 322 
Growth of Chiton Tuberculatus in Different Environments. .By W. J. Crozier 325 
On the Method of Progression in Polyclads By W. J. Crozier 379 
The Growth-Rate of Samoan Coral Reefs By Alfred G. Mayor 390 
GENETICS 
Disease Resistance in Cabbage By L. R. Jones 42 
The Effect of Artificial Selection on Bristle Number in Drosophila Ampelo- 
phila and its Interpretation By Fernandus Payne 55 
Hereditary Tendency to Form Nerve Tumors By C. B. Davenport 213 
The Effect of Inbreeding and Crossbreeding upon Development 
By D. F. Jones 246 
Maroon — A Recurrent Mutation in Drosophila By Calvin B. Bridges 316 
Sex and Sex Intergrades in Cladocera By Authur M. Banta 373 
PHYSIOLOGY AND PATHOLOGY 
The Basal Katabolism of Cattle and Other Species 
By Henry Prentiss Armsby, J. August Fries and Winfred Waite Braman 1 
The Brain Weight in Relation to the Body Length and also the Partition of 
Non-Protein Nitrogen, in the Brain of the Gray Snapper (Neomaenis 
Griseus) By Shinkishi Hatai 19 
The Law Controlling the Quantity and Rate of Regeneration 
By Jacques Loeb 117 
Effects of a Prolonged Reduction in Diet on 25 Men. I. Influence on Basal 
Metabolism and Nitrogen Excretion By Francis G. Benedict and Paul Roth 149 
Effects of a Prolonged Reduction in Diet on 25 Men. II. Bearing on Neuro- 
muscular Processes and Mental Condition By Walter R. Miles 152 
Effects of a Prolonged Reduction in Diet on 25 Men. III. Influence on 
Efficiency During Muscular Work By H. Monmouth Smith 157 
The Destruction of Tetanus Antitoxin by Chemical Agents 
By W. N. Berg and R. A. Kelser 174 
Dilation of the Great Arteries Distal to Parttally Occluding Bands 
By William S. Halsted 204 
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 
A Biometric Study of Human Basal Metabolism 
H By J. Arthur Harris and Francis G. Benedict 370 
ANTHROPOLOGY AND PSYCHOLOGY 
Measuring the Mental Strength of an Army By Major Robert M. Yerkes 295 
