iv CONTENTS. 



PAGF. 



No. 5. APRIL, 1905. 

 C. M. CHILD : Form- Regulation in Cerianthus, IX. Regulation, 



Form and Proportion 271 



CHARLES T. BRUES : Notes on the Life History of the Stylopidce... 290 



M. T. THOMPSON: Immature Specimens of Penella filosa 296 



CHARLES ZELENY : The Rearing of Serpulid Larva with Notes on 



the Behavior of the Young Animals 308 



No. 6. MAY, 1905. 



T. H. MORGAN : Some Further Experiments on Self -Fertiliza- 

 tion in dona 313 



A. P. MATHEWS : A Theory of the Nature of Protoplasmic Respi- 

 ration and Growth 331 



Louis I. DUBLIN : On the Nucleoli in the Somatic and Germ Cells 



of Pedicellina americana 347 * 



ANNIE H. PRITCHETT : Fossil Cephalopoda Described by Hyatt 



and Cragin in the Museum of the University of Texas 365 



