UNIVERSITY OF CALIFORNIA PUBLICATIONS 



ZOOLOGY 



Vol. 6, No. 1, pp. 1-10 October 15, 1908 



CONTRIBUTIONS FROM THE LABORATORY 



OF THE 



MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO 

 XXIII 



ON THE WEIGHT OF DEVELOPING EGGS 



BY 



WM. E. RITTER AND SAMUEL E. BAILEY 



PART I 



THE POSSIBLE SIGNIFICANCE OF SUCH 

 INVESTIGATIONS 



WM. E. RITTER 



PART II 



PRACTICABILITY OF THE DETERMINATIONS 



BY 



SAMUEL E. BAILEY 



BERKELEY 

 THE UNIVERSITY PRESS 



