August 2, 1907] 



SCIENCE 



157 



H. W. NoERis : " The Cranial Nerve Components 

 of AmpJiiuma." 



J. P. NuEL: "The Eeaotions of Flatworms to 

 Light." " 



C. C. NuTTtNG : " The Color of Deep-sea Animals 

 Considered in Connection with Phosphorescence." 



A. E. Obtmann : " The Necessity of Survey 

 Work in Zoographioal Research," " The Double 

 Origin of Marine Polar Faunas," "Variations and 

 Changes of Environment." 



H. F. OsBOBN: Title not yet received. 



W. Patten : " On the Origin of Vertebrates." 



8. Patee: "Some of the Earliest Reactions of 

 the Vertebrate Embryo and their Relations to the 

 Nervous System." 



J. T. Patterson : " On Gastrulation in Birds." 



P. Pelseneer : " Bipolar Theory," " Considera- 

 tions sur la gen6se du n^vraxe, specialement sur 

 celle observ4e ehez le Pfilobate brun." 



A. W. Peters : " The Action of Pure Water on 

 Living Cells," " The Function of the Inorganic 

 Salts of the Protozoan Cell and its Medium." 



A. Petetjnkevitch : " The Sense of Sight in 

 Spiders." 



J. P. Porter: "The Behavior of Birds." 



H. Pezibram: Title not yet received. 



F. H. Pratt : " Vasomotor Reflexes to Isolated 

 Vascular Areas." 



H. E. Radasoh: "Unilateral Absence of Genito- 

 urinary System and its Relation to the Develop- 

 ment of Wolffian and Muellerian Ducts." 



B. H. Ransom: Title not yet received. 



A. M. Reese: " Embryology of the Florida Alli- 

 gator." 



W. E. RiTTER: "A Point of View with Refer- 

 ence to the Problem of Organic Evolution," " The 

 Problem of Adaptation to Conditions of Life at 

 Great Depths, as exemplified by Simple Ascid- 

 ians." 



L. Ehumbuie : " Zellenmechanik und Verer- 

 bung." 



L. Rotjle : " L'Origine de la notochorde et du 

 neuraxe chez les larves urodeles des Tuniciers." 



C. F. RoTJSSELET ; " Improvements in the Metli- 

 od of Preservation of Rotatoria." 



W. Roux: Title not yet received. 



R. P. SCHAEFF: "On the Evolution of Conti- 

 nents as illustrated by the Geographical Distribu- 

 tion of Existing Animals." 



V. E. Shelfoed : " Behavior of the Tiger 

 Beetles: Its Bearing on Variation and Distribu- 

 tion." 



A. E. Shiplet: Title not yet received. 



C. H. Shull: "Results of Hybridizing Bursa 

 pastoris and Bursa heegeri." 



W. J. SiNCiATR: "The Santa Cruz Typotheria." 



H. M. Smith: Title not yet received. 



J. B. Smith : " Ridding a State of Mosquitoes." 



A. Steuer : " Seasickness." 



N. M. Stevens : " Various Types of Heterochro- 

 mosomes in the Coleoptera," "The Chromosomes 

 in Drosophila ampelophila." 



C. W. Stiles : Title not yet received. 



P. B. Sumner: "The Effects upon Fishes of 

 Changes in the Chemical or Physical Properties 

 of their Surrounding Medium." 



O. P. Terry and E. P. Lton : " Further Observa- 

 tions on Ferment Activity in Unfertilized and Fer- 

 tilized Eggs." 



J. A. Thomson : " A New Type of Alcyonarian," 

 "As Regards Germinal Selection." 



E. L. Thorndike: Title not yet received. 



W. L. ToWEE: "Experimental Evidence Con- 

 cerning the Existence of 'Unit Characters' and 

 the Relation of this Evidence to the Theory of 

 Mutation," "Experimental Production of Pro- 

 gressive Evolution without Saltation," " Contin- 

 uity vs. Discontinuity in Animal Evolution." 



C. H. Turner: "Do Ants form 'Practical 

 Judgments ' ? " 



J. W. VAN Wijhe: "The Chondrocranium in 

 Birds." 



T. W. Vaughan: "Results of a Study of Re- 

 cent Madreporaria of the Hawaiian Islands and 

 Laysan." 



F. Vejdovsky: "Giebt es eine Redulctionsteil- 

 ung?" "Ueber den Ursprung der Lymphocyten." 



H. B. Ward: Title not yet received. 



J. Waeeen: "Epiphysial Region in Reptilia 

 and Necturus," "The Paraphysis and Pineal Re- 

 gion in Lacerta," "The Paraphysis and Pineal 

 Region in Chrysemys marginata." 



A. S. Warthin: "Regional Hiemolymph Nodes, 

 a Comparative Study." 



E. Wasmann: Title not yet received. 



W. M. Wheeler: " Social Insects and the In- 

 heritance of Somatogenic Characters," " The Origin 

 of Slavery among Ants." 



B. G. Wilder : " Certain Simplified Terms, with 

 Reasons for their Adoption." 



A. WiLLET : " Leeithality, Oviposition and Vivi- 

 parity." 



E. B. Wilson : " Illustrations of the Morpholog- 

 ical and Physiological Individuality of the Chro- 

 mosomes in the Hemiptera." 



N. Yatsu : " An Experimental Study on the 

 Cleavage of the Ctenophore Egg." 



R. M. Yerkes: "Behavior of the Dancing 

 Mouse." 



