CONTENTS OF VOL. VII. 



No. i. JUNE, 1904. 



PAC.K 



ARTHUR W. GREELEY i 



ARTHUR W. GREELEY : Experiments on the Physical Structure of 

 the Protoplasm of Paramcecium and its Relation to tlie Re- 

 actions of the Organism to Thermal, Chemical and Elec- 

 trical Stimuli 3 



FRANK R. LILLIE : Experimental Studies on the Development of 



Organs in the Embryo of the Fowl (^Gallus domesticits}... 33 

 W. K. GREGORY : The Relations of the Anterior Visceral Arches 



to the Chondrocranium 55 



EVERETT F. PHILLIPS : Variation in Bees : A Reply to Mr. Lutz. 70 

 L. R. GARY: Notes on a Peculiar Actinozoan Larva 75 



No. 2. JULY, 1904. 



J. E. DUERDEN : 77.ii? Morphology of the Madreporaria, V. Septa! 



Segue nee 79 



BASHFORD DEAN : Evolution in a Determinate Line as Illustrated 



by the Egg-cases of Chi aneroid Fishes 105 



WILLIAM PATTEN : New Facts Concerning Bothriolepis 113 



No. 3. AUGUST, 1904. 



C. M. CHILD : Form- Regulation in Cerianttuts, V. 127 



ALICE M. BORING : Closure of Longitudinally Split Tubularian 



Stems 154 



T. H. MORGAN AND A. E. SCHIEDT : Regeneration in the Plan- 



arian Phagocata gracilis 160 



ESTHER F. BYRNES : On the Skeleton of Regenerated Anterior 



Limbs in the Frog '. . . 1 66 



ADELE M. FIELDE : Observations on Ants in their Relation to 



Temperature and to Submergence '. i 70 



No. 4. SEPTEMBER, 1904. 



S. \V. WILLISTON : The Temporal Arches of the Reptilia 175 



C. M. CHILD : Form- Regulation in Cerianthus, VI. 193 



ADELE M. FIELDE: Portable Ant-Nests 215 



