a. Factors inducing metamorphosis in larvae of marine benthic inverte- 

 brates. Spirorbis borealis (Polychaeta) 



KNOUFF, R. A. Ph.D., Prof. — Dept of Anat., Ohio State Univ., 

 COLUMBUS 10. Ohio. U.S.A. 



KOCHER, W. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, 

 Kiinstlergasse 16, ZuRICH 6, Schweiz 



a. Differentiation and regeneration of notochord. Triton (Urodela) 



b. Experimentally evccated scop of differentiation in the notochord. Triton 

 alpestris (Urodela) 



KOECKE, U. Dr Phil. — Zool. Inst, der Univ. Koln, Kerpenerstrasse 13, 

 KOLN-LINDENTHAL, Deutschland 



a. Krebsproblem als entwicklungsphysiologisches Problem. Mus (Rodentia) 



b. Probleme der Entwicklungsphysiologie. Columba (Aves) 

 KOLLROS, J. J. Ph.D.. Prof. — Dept of Zool., State Univ. of Iowa, IOWA 



CITY, Iowa, U.S.A. 



a. Influence of peripheral and intracentral factors upon the growth of the 

 midbrain. Rana, Bufo, Pseudacris (Anura) 



b. Metamorphic effects of thyroxine in very low concentrations, and in 

 higher concentrations applied locally. Rana, Bufo, Pseudacris, Ambysto- 

 ma (Amphibia) 



c. Regeneration of the midbrain in embryos and larvae. Rana, Bufo, Pseu- 

 dacris, Xenopus (Anura) 



d. Development of grafts of isolated segments of the C.N.S. (Anura) 



e. Studies of mitosis in the developing C.N.S. (Amphibia) 

 KONIGSBERG. I. R. A.B.. Ph.D. — Div. Chem. Embryol., Med. Center, 



Univ. of Colorado, 4200 East Ninth Ave, DENVER 20. Colo., U.S.A. 



a. Ontogeny of hormonal correlation of embryonic metabolism. Gallus 



b. Effect of hormones on muscle development. Gallus domesticus (Aves) 



c. Chemistry of muscle differentiation. Gallus (Aves) (in collaboration with 

 H. HERRMANN and A. J. SAMUELS) 



KONIGSBERG, Mrs U. ROTHFELS Ph.D. — Div. Chem. Embryol., 

 Med. Center, Univ. of Colorado, 4200 East Ninth Ave, DENVER 20, 

 Colo., U.S.A. 



a. Analysis of muscle tissue grown in vitro. Homo (Primates) (in colla- 

 boration with H. HERRMANN) 



b. Study of developmental disturbances related to nutritional deficiencies 

 investigated by application of anti-vitamins and anti-amino acids to the 

 intact egg and to explants (somites). (Aves) (in collaboration with 

 H. HERRMANN) 



KONOPACKA, Mrs B. Dr, M.V.S.S., Prof. — Inst, of Histol. and Em- 

 bryol., Veter. Fac, ul. Grochowska 272, WARSZAWA, Poland 



a. Histochemical studies on the differentiation of epithelial cells in the 

 intestine. Sus (Mammalia) 



b. Alcaline phosphatase in early embryonic stages. Sus (Mammalia) 

 KOSCIELSKI, B. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool.. Uniw. we 



V/roclawiu, ul. Sienkiewicza 21, WROCLAW, Poland 

 a. Morphogenetical functions and histophysiology of the thyroid gland and 

 hypophysis. Tritarus (Urodela) 

 KRABBE, K. H. Dr Med. — Tornblad-Inst. of comp. Embryol., Biskops- 

 gatan 7, LUND, Sweden (from Kommunehospitalet, COPENHAGEN. 

 Denmark) 



57 



