157 



M. W. Woerdeman, Amsterdam: Eye-operations on rat embryos in utero 



(with demonstration). 

 A. Dalcq, Brussels: L'organisation nucleaire et cytoplasmique dans I'oeuf des 



Rongeurs (avec demonstration). 

 Mrs R. Clayton, Edinburgh (as guest): Antigens and differentiation in the 



Newt. 

 F. E. Lehmann, Berne: Morphogenetische Realisationsstufen nach Entwick- 



lungshemmungen oder nach Verschiebung des De- 



terminationsgeschehens durch chemische Faktoren. 



V. C. Twitty, Stanford: Experiments on the migration of embryonic chroma- 



tophores in vitro (with film). 



H. V. Br0ndsted, Copenhagen: The means and role of cell attachment for 



morphogenesis (germinating sponge gemmules) (with film). 



The Secretary, Chr. P. RAVEN. 



Revised Statutes of the I. I.E. 



At the General Assembly of the I. I.E. in Utrecht, August 1952, new Statutes 

 and by-laws have been adopted. The main points of the new Statutes are the 

 following: 



In future the International Institute of Embryology shall consist of fellows, 

 members, emeritus-members and supporting members. All persons active in 

 research in the field of morphogenesis may apply for membership. They may 

 be elected by simple majority by a General Assembly upon sponsorship by 2 

 fellows and approval of the Board. Members shal have full voting rights. Their 

 number is unlimited. The present ..members" in future will have the rank of 

 ..fellows". The number of fellows shall be limited to 75. They constitute the 

 College of Fellows and are elected by cooptation with a 2/3 majority. The 

 members of the Board shall be elected from among the fellows. Part of the 

 objectives of the Institute will be reahzed through the intermediary of the 

 Hubrecht Laboratory, to which end the Board may appropriate part of the 

 resources of the Institute to the profit of the Laboratory; these activities of the 

 Hubrecht Laboratory, which are sponsored by the Institute, shall be supervised 

 by the Board. 



List of fellows of the International 

 Institute of Embryology 



H. B. Adelmann. Ithaca. N.Y. 



P. Ancel, Paris (Emer.) 



M. Avel, Bordeaux 



B. I. Balinsky, Johannesburg 



F. Baltzer, Bern 



L. G. Barth, New York. N.Y. 



G. R. de Beer. London 



H. Bluntschli, Bern (Emer.) 



J. Boeke. Utrecht (Hon. President) 



J. Brachet. Bruxelles 



P. Brien. Bruxelles 



A. J. P. V. d. Broek. Utrecht (Emer.) 



H. V. Brondsted. Kobenhavn 



W. Buno, Montevideo 



R. K. Burns, Baltimore. Md 



E. van Campenhout. Louvain 



F. de Castro, Madrid 



A. Celestino da Costa, Lisboa 

 Chuang Hsiao-Hui, Peiping 



G. W. Corner, Baltimore, Md 

 D. P. Costello, Chapel Hill, N.C. 

 G. Cotronei, Roma 



A. Dalcq, Bruxelles 



N. Dragomirow, Moskow 



(proposed as to be member) 

 R. M. Eakin, Berkeley. Calif. 

 CI. Estable, Montevideo 

 G. Fankhauser, Princeton, N.J. 



