a. Physical and chemical nature of yolk. (Aves) 



b. Mechanisms of growth of the marginal blastoderm. Gallus spec. (Aves) 



c. A description of the normal regression of mesenchyme in the middle 

 ear cavity as compared with retention of middle ear mesenchyme in 

 congenital conduction deafness. Rattus norvegicus (Rodentia) 



d. Experimental attempts to alter the rate of mesenchymal regression in 

 the middle ear cavity. Rattus norvegicus (Rodentia) 



e. Differentiation capacities of middle ear mesenchyme in vitro and as 

 chorio-allantoic grafts. Rattus norvegicus (Rodentia) 



SCHNEIDER, D. Dr rer.nat. — Max Planck-Inst. fiir Biol., Spemannstr. 

 34. TOBINGEN. Deutschland 



a. Entwicklungsphysiologie des Phototropismus. 



b. Bildung des Integuments. 



c. Regeneration. 



d. Polymorphismus. Bugula avicularia (L) (Gymnolaemata, Bryozoa ecto- 

 pTOcta) 



e. Wachstum von Kalkkristallen im Integument. (Bryozoa stenolaemata et 

 gymnolaemata) 



SCHNEIDER, R. Dr med. — Dr Senckenberg. Anat. Inst., Med. Fak. der 



Univ., Ludwig Rehnstr. 14, FRANKFURT/Main-Siid, Deutschland 

 SCHNETTER, M. Dr phil. — Zool. Inst, der Univ., Katharinenstrasse 20, 



FREIBURG i. Brsg.. Deutschland 

 SCHNITTER. M. — Zool.vergl. Anat. Inst.. Naturw. Fak.. Univ. Zurich, 



Kunstlergasse 16, ZURICH 6, Schweiz 

 SCHOELLER, Miss J. — Centre de Biol, anim., 40 Rue Lamartine, TALEN- 



CE (Gironde), France 



a. Facteurs de la differenciation des disques imaginaux de la tete. Calli- 

 phora spec, Sarcophaga spec. (Diptera) 



b. Formation de la tete imaginale. Calliphora spec. (Diptera) 

 SCHOLTEN, F. C. — Anat.-Embryol. Lab., Free Calvinistic Univ., Pr. 



Hendriklaan 27, AMSTERDAM Z, Holland 

 a. The influence of hypoxaemia during gravidity on the development o£ 

 the cerebellum of the foetus. Rattus norvegicus (Rodentia) (in collabo- 

 ration with F. Van FAASSEN and F. ST AM) 

 SCHOTT, J. Lie. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de 

 Zool. et de Biol, gener.. 12 Rue de I'Universite, STRASBOURG, France 



a. Morphogenese et physiologie embryonnaire des glandes endocrines. 

 (Selachii. Teleostei) (en collaboration avec J. VIVIEN et R. RECHEN- 

 MANN) 



b. Analyse du processus de regulation et de paragenese. (Selachii) (en 

 collaboration avec Miss D. HAY et J. H. VIVIEN) 



SCHOTTE, O. E. Dr, M.I. I.E.. Prof. — Dept of Biol., Amherst Coll., 



AMHERST, Mass.. U.S.A. 

 SCHREIBER, B. M.I.I.E., Prof. — 1st. di Zool. e Anat. comp., Universita. 



PARMA, Italia 



a. Chemistry of the bone-inducing substances in bone extracts. (Amphibia), 

 Gallus domesticus (Aves) 



b. Induction in in vitro cultured tissues. (Amphibia). Gallus domesticus 

 (Aves) 



SCHREIBER G. Ph.D., Prof. — Inst, de Biol., Fac. Filosofia, Univ. de 

 Minas Gerais, Caixa Postal 253, BELO HORIZONTE, M.G., Brasil 



97 



