IV CONTENTS. 



EDWIN G. CON KLIN : Experiments on the Origin of the Cleavage 



Centrosomes 211 



No. 5. OCTOBER, 1904. 



ADELE M. FIELDE : Power of Recognition Among Ants 227 



CHAS. W. HARGITT : Notes on a Hitherto Undescribed Hydroid 



from Long Island Sound 251 



EDWIN C. STARKS : A Synopsis of Character of some Fishes Be- 

 longing to the Order Haplomi 254 



No. 6. NOVEMBER, 1904. 



C. M. CHILD: Form- Regulation in Ceriantlnis, VII 263 -/ 



CHARLES D. SNVDER : Locomotion in Batrachoseps with Severed 



Nerve-cord 280 



ALEXANDER G. RUTHVEN : Butler's Garter Snake 289 



ADELE M. FIELDE: Tenacity of Life in Ants 300 



