DeHAAN, R. L. M.A., Ph.D. — Dept. of Embryol., Carnegie Inst, of 

 Washington. 115 W. University Parkway. BALTIMORE. Md. 21210. 

 U.S.A. 



— Dept. of Biol, Johns Hopkins Univ.. Charles and 34th Sts. BALTI- 

 MORE 18. Md.. U.S.A. 



a. Morphogenetic movements and cell migration associated with embryonic 

 heart formation. Callus gallus (Aves) 



b. Pacemaker formation and the initiation of the heartbeat. Gallus gallus 

 {Aves) 



c. Spatial organization and supracellular patterns in embryonic tissues. 

 Drosophila spec. (Diptera), Gallus gallus (Aves) 



DEKKER. Miss A. Med. Dr. — Anat.-Embryol. Lab., Fac. of Med., State 

 Univ. of Leiden, Wassenaarseweg, Boerhaavekwartier, LEIDEN, Ne- 

 therlands 

 DELMAS, A. Prof. — Lab. d'Anat.. Fac. de Med., 45 Rue des Sts. Peres, 

 PARIS Vie. France 

 a. Developpement de I'encephale. Homo sapiens (Primates) 

 h. Developpement anormal de I'encephale et des organes des sens. Mus 

 rattus (Rodentia) 

 DeLONG. G. R. A.B., M.D. — Sect, on Exper.Embryol.. Lab. of Neuroanat. 

 Sci.. N.I.N.D.B.. Natl.Inst. of Health, BETHESDA. Md. 20014. U.S.A. 

 a. Development of retino-tectal maps. Gallus domesticus (Aves) 

 DELSOL, M. Dr.es Sci., Prof. — Dept. de Biol. Gener., Fac. Cathol.. 25 Rue 



du Plat, LYON 2e. France 

 DfiLYE (ROLLIN), Mrs. P. M. Lic.es Sci. — Lab. de Biol. Anim.. Fac. 

 des Sci., 1 Place Victor Hugo, MARSEILLE 3e, France 

 a. Experimental analysis of development; regeneration; stolonisation. (Syl- 

 lidae. Polychaeta) 

 DeMAGGIO. A. E. B.S.. M.A.. A.M.. Ph.D. — Dept. of Biol. Sci.. Dart- 

 mouth Coll., HANOVER, N.H., U.S.A. 

 a Experimental developmental morphology (Plantae) 

 DE MEIO, R. — Inst, de Biol. Celular, Univ. Nacional de Cordoba, Casilla 



Postal 362, CORDOBA, Argentina 

 DENIS, H. A. Dr.es Sci. — Dept. Morphol., Inst, de Zool. Ed. Van 

 Beneden, Fac. des Sci., 22 Quai Ed. Van Beneden, LIfiGE, Belgique 

 a. Etude du role des acides nucleiques dans la differenciation embryon- 

 naire. (Amphibia) 

 DENNE. M. P. B.Sc. (Hons.), Ph.D. — Plant Physiol. Div.. Dept. of 

 Scientific and Industrial Research. PALMERSTON NORTH. New 

 Zealand 

 a. Changes in the rate and distribution of cell division in the shoot apex, 

 including diurnal fluctuations, plastochronal changes, and the transition 

 from the vegetative to the flowering apex. Trifolium repens 

 DENNY. P. C. B.A. — Dept. of Devel. Biol.. Div. of Biol., Cahfornia Inst, 

 of Technol., PASADENA 4, Cahf.. U.S.A. 

 a. Enzyme induction and protein synthesis in marine embryos. (Echino- 

 dermata) 

 DENT, J. N. A.B.. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia. 

 Gilmer Hall. CHARLOTTESVILLE, Va.. U.S.A. 



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