227 



Echinoderma 



[Artificial membrane élévation produced by substaDces which lower sur- 

 face tension, causing membrane to be pushed away and its semiper- 

 meable properties to be lost. Continuation of process leads to cytoly- 

 sis. Sperm lowers locally surface tension by acid action. Initiation of 

 development involves gelatinization or coagulation of some substance 

 within egg.] 



05826 Loeb, Jacques. 39,5 . 13 9 



1915. Concerning Brachet's Ideas of the Rôle of Membrane Formation 

 m Fertilization. Biol. Bull. Woods Hole Vol. 28 p. 87-92. [Essential 

 feature chemical (enhancement of oxidations).] 



27 Loeb, Jacques. 39.5 . 13 9 

 1915. Reversible Activation and Incomplète Membrane Formation of 

 the Unfertilized Eggs of the Sea Urchin. Biol. Bull. Woods Hole Vol. 

 29 p. 103—110, 2 figg. [Fertilization of eggs of Strongylocentrotus in resting 

 stage after treatment with hypertonic sea-water. Membrane formation 

 m m/ 2 solution of NaCl, KCl and CaCh after treatment with butyric 

 acid. Eggs may still be fertilized and as a rule do not disintegrate on 

 being put back into sea-water.] 



28 Moore, Arthur Russell. 39,5 . 13 9 

 1915. On the Rhytmical Susceptibility of Developing Sea Urchin *Eggs 

 to Hypertonic Sea Water. BioL Bull. Woods Hole Vol. 28 p. 253—259, 

 2 figg. [Maximal susceptibility just after fertilization and immediateiy 

 before and during each cytoplasmic division. Similar rhythm after fattv 

 acid treatment.] 



29 Richards, A,, and A. E. Woodward. 39.5 ; 13 9 

 1915. Note on the Effect of X- Radiation on Fertilizin. iContrio/zool. 

 Dept. Univ. Texas No. 123.) Biol. Bull. Woods Hole Vol. 28 p. 140— 



147, 4 pis. [Weak radiation accelerative, strong inhibitive.l 

 5830 Woodward, Alvalyu E. 39.5 . 13 9 



1915. Note on the Nature and Source of „Purple X." Biol. Bull! Woods 

 Hole Vol. 29 p. 135—137. [Purple color of boiled suspension of Arbacia 

 sperm and its inhibitory effect. Chemical nature unknown, not echino- 

 chrome.] 



31 Hérouard, Edgard. 39.5 : 14.71 



1915. Les unités architectoniques et les homologies de la lanterne "d' 

 Aristote. Bail. Soc. zool. France T. 40 p. 117—123, 4 figsr 

 82 Checchia-Rispoli, G. 39,5 ( 117 ) 



1915. Sopra alcuni echinidi del Cretaceo superiore délia Tripolitania, 

 raccolti di Domenico Zaccagna. Boll. Com. geol. Italia (5) Vol. 5 p. 109 

 114, 1 tav. [2 nn. spp. in: Cassidulus, Linthia.] 



33 Glaser, Otto, 39.5 Arbacia : 18.13 

 191o. Oan a Single Spermatozoon Initiate Development in Arbacia. 

 Biol. Bull. Woods Hole Vol. 28 p. 149-153. [Single sperm can not ef- 

 fect those changes in egg-coverings which will permit it to reach proto- 

 plasmic surface film beneath.] 



34 Lillie, Frank R. 39.5 Arbacia : 13.13 

 15*15. btudies of Fertilization. VII. Analysis of Variations in the Ferti- 

 lizing Power of Sperm Suspensions of Arbacia. Biol. Bull. Woods Hole 

 Vol. 28 p. 229-251, 4 figg. [Concentration and time factors. Variabili- 

 ty or reproductive éléments.] 



85 e °5? rb ' A ' J ! 39.5 irbacia : 13.9 



191o. Expenmentally Fused Larvae of Echinoderms with Special Réfé- 

 rence to their Skeletons. Part 2. Arbacia punctata. Arch. Entw.-Mech. 

 Bd. 41 p. 579—604, 7 pis. [By means of isotonic or hypotonie NaCl 

 solutions in sea-water. Suppressed and dominant larvae. Regulative 

 processes.] 



55836 Airaghi, Carlo. 39.5 ciypeaster (1182) 



I»lo. Risposta alla Nota del Prof. D. Lovisato sopra alcuni Clypeaster 

 délia Sardegna. Boll. Soc. geol. Ital. Vol. 34 p. 202—208. 



