496 



INDEX 



Mollusks with special rcfprcnoo to the rolo 

 of the 'rhinophorcs.' Some observations 

 on qiinlitativo oheniical and physical 

 stimulations in nudibranchiate 423 



Morpholopy and physiology of the genus 



I'ronychia. A contribution to the 353 



Mutations in mice of the penus Pcromyscus. 

 Further studies of color 289 



NEOTENOl^S amphibians. Experiments 

 on the metamorphosis of 397 



Nervous system in the locomotion of certain 



marine polyclads. The role of the 57 



Nervous system in the regeneration of poly- 

 clad Turbellaria. The role of the 49 



Nervous system negli insctti. II. Ricerche 

 sui movimenti di mancggio provocati nei 

 coleotteri. Studi sulla fisiologia del 211 



Nudibranchiate mollusks with special refer- 

 ence to the role of the 'rhinophores.' 

 Some observations on qualitative chemi- 

 cal and physical stimulations in 423 



OBEI.IA. Aproof of its existence. Experi- 

 mental control of organic polarity by the 

 electric current. II. The normal elec- 

 trical polarity of 477 



Olmsted, J. M. D. The role of the nervous 

 system in the locomotion of certain 



marine polyclads 57 



Olmsted, J. M. D. The role of the nervous 

 svstem in the regeneration of polyclad 



Turbellaria 49 



Organic polarity by the electric current. 

 II. The normal electrical polarity of 

 Obelia. A proof of its existence. Experi- 

 mental control of 477 



PARAMECIUM in infusions of known bac- 

 terial content. The growth of 133 



P.\RKER, G. H. The crawling of young log- 

 gerhead turtles toward the sea 323 



P.vRKER, G. H. The leaping of the stromb 

 (Strombus gigas Linn.) 205 



Peromyscus. Further studies of color muta- 

 tions in mice of the genus 289 



Phillips, Ruth L. The growiih of Para- 

 mecium in infusions of known bacterial 

 content 135 



Physical stimulations in nudibranchiate mol- 

 lusks with special reference to the role 

 of the 'rhinophores.' Some observations 

 on Qualitative chemical and 423 



Physiological self-differentiation of the wing- 

 germs grafted on caterpillars of the op- 

 posite sex 469 



Physiology del sistema nervoso negli insetti. 

 II. Ricerche sui movimenti di maneggio 

 provocati nei coleotteri. Studi sulla 211 



Physiology of the genus Uronychia. A con- 

 tribution to the morphology and 353 



Planaria by means of anesthetics. The con- 

 trol of head formation in 1 



Polarity by the electric current. II. The 

 normal electrical polarity of Obelia. A 

 proof of its existence. Experimental con- 

 trol of organic 477 



Polyclad Turbellaria. The role of the nerv- 

 ous system in the regeneration of 49 



Polyclads. The role of the nervous system in 

 the locomotion of certain marine 57 



Pyrameis atalanta Linn. A quantitative 

 study of tarsal sensitivity to solutions 

 of saccharose in the red admiral butterfly. 445 



QUALITATIVE chemical and physical 

 stimulations in nudibranchiate mol- 

 lusks with special reference to the role 

 of the 'rhinophores.' Some observations 

 on 423 



Quantitative study of tarsal sensitivity to 

 solutions of saccharos'e in the red admiral 

 butterfly, Pyrameis atalanta Linn. A. . . 445 



RED admiral butterfly, Pyrameis atalanta 

 Linn. A quantitative study of tarsal 

 sensiti\'ity to solutions of saccharose 



in the 445 



Regeneration of polyclad Turbellaria. The 



role of the nervous system in the 49 



Relationship in the development of the brain 



and eyes of Lepidoptera. Mutual 4.59 



'Rhinophores.' Some observations on quali- 

 tative chemical and physical stimulations 

 in nudibranchiate mollusks with special 

 reference to the role of the 423 



SACCHAROSE in the red admiral butter- 

 fly, PjTameis atalanta Linn. A quanti- 

 tative stud-" rif tarsal sensitivity to solu- 

 tions of 445 



Sea. The crawling of young loggerhead 

 turtles toward the 323 



Self-r'iff'erentiation of the wing-germs grafted 

 •aterpillars of the opposite sex. Physi- 

 ical 469 



Seubinvity to solutions of saccharose in the 

 red admiral butterfly, Pyrameis atalanta 

 Linn. A quantitativ^e study of tarsal. . . . 445 



Sex characters. A case of true hermaphrodit- 

 ism in the fowl, with remarks upon 

 secondary 185 



Sex. Physiological self-differentiation of the 

 wing-germs grafted on caterpillars of the 

 opposite 469 



Stimulations in nudibranchiate mollusks with 

 special reference to the role of the 

 'rhinophores.' vSome observations on 

 qualitative chemical and physical 423 



Stromb (Strombus gigas Linn.) . The leaping 

 of the 205 



(Strombus gigas Linn.). The leaping of the 

 stromb 205 



Strong, I/EOnell C. A genetic analysis of 

 the factors underlying susceptibility to 

 transplantable tumors 67 



SuMNEK, F. B., AND CoLLiNS, H. H. Further 

 studies of color mutations in mice of the 

 genus Peromyscus 289 



Susceptibility to transplantable tumors. A 

 genetic analysis of the factors underlying. 67 



Swingle, W. W. Experiments on the meta- 

 morphosis of neotenous amphibians 397 



TARSAL sensitivity to solutions of sac- 

 charose in the red admiral butterfly, 

 Pyrameis atalanta Linn. A quantita- 

 tive study of _• 445 



Transplantable tumors. A genetic analysis 



of the factors underlying susceptibility to. 67 

 Tumors. A genetic analysis of the factors 

 underlying susceptibility to trans- 

 plantable 67 



Turbellaria. The role of the nervous system 



in the regeneration of polyclad. 49 



Turtles toward the sea. The crawling of 

 young loggerhead 323 



URONYCHIA. .A contribution to the 

 morphology and physiology of the 

 genus 353 



WING-GERMS grafted on caterpillars of 

 the opposite sex. Physiological self- 

 differentiation of the 469 



YOLTNG, DoNNELL Brooks. A contri- 

 bution to the morphology and physi- 

 ology of the genus Uronychia 353 



