Da mas 25 Del 



a. Etude descriptive et comparative du developpement. Petromyzon marinus, 

 Lampetra fluviatilis et L. planeri (Cyclostomata) 

 DAN, Mrs J. C. Ph.D. — Embryol. Section. Dept of Biol., Tokyo Metro- 

 politan Univ., Setagaya-ku, TOKYO, Japan 



a. Electron-microscope observation of spermatozoa under various experi- 

 mental conditions. ( Echinodermata, Mollusca and Annelida) 

 DAN, K. Ph.D. (Rigakuhakushi), Prof. — Embryol. Section, Dept of Biol.. 

 Fac. of Sci., Tokyo Metropolitan University, Setagaya-ku, TOKYO, 

 Japan 



a. Research into causes of form change in early development, from pre- 

 cleavage through metamorphosis. (Echinoidea) 



h. Birefringence studies of dividing eggs. (Echinoidea) 



c. Mitotic spindle isolation and analyse. (Echinoidea) 



d. Culture of neuroblasts. Mitosis. Species undecided (Orthoptera) 

 D'ANCONA, U. Prof. — 1st. di Zool. e Anat. Comp., Fac. di Sci., Via 



Loredan 6, PADOVA, Italia 



a. Differentiation of the gonad. (Vertebrata, esp. Pisces) 



h. Embryology. (Teleostei, Ganoidea and Amphibia) 

 DANKMEIJER, J. Med. Dr, Prof. — Anat.-Embryol. Lab. of the Univ. 

 of Leyden, Fac. of Med., Wassenaarseweg, Boerhaavekwartier, LEI- 

 DEN, Holland 



a. Normal and abnormal development of the heart. Homo and other Ani' 

 malia (in collaboration with J. A. LOS) 



b. Development of thyroid gland and teeth (investigations with radioactive 

 isotopes) 



c. Development of uterus. Homo (Primates) (in collaboration with Miss 

 A. DEKKER) 



d. Heart and vessels in congenital malformations. Homo (Primates) (in 

 collaboration with H. A. SNELLEN) 



DAVIES, D. H. M.Sc. — Division of Fisheries, Beach Road, Sea Point, 

 CAPE TOWN, South Africa 

 a. Embryology. Sardinops ocellata (Pappe) (Isospondyli, Neopterygii) 

 DAVIES, F. M.D., D.Sc, Prof. — Dept of Anat., Fac. of Med., Univ. of 

 Sheffield. SHEFFIELD, England (U.K.) 

 a. Histological studies of conducting system of the heart. (Mammalia) 

 (in collaboration with E. T. B. FRANCIS, Dept of Zool.) 

 DE, P. M.B.B.S. — Cell Research Unit., Chittaranjan Cancer Hospital, 

 CALCUTTA 26, India 

 a. Cell-chemistry of normal and carcinomatous cells. Homo (Primates) 

 (in collaboration with S. MOOKERJEE) 

 DE CESARE, Miss. I. Ph.D. — 1st. di Anat. Comp.. Via Bclmeloro 8, 

 BOLOGNA (103). Italia 

 a. Action of antimitotics on early development. (Amphibia) (in collabo- 

 ration with P. PASQUINI) 

 DEKKER. Miss A. Physician — Anat.-Embryol. Lab. of the Univ.. Fac. of 

 Med.. Wassenaarseweg. Boerhaavekwartier. LEIDEN. Holland 

 a. Development of the uterus. Homo (Primates) (in collaboration with 

 J. DANKMEIJER) 

 DELMAS. A. Prof. Agr. — Lab. des Travaux Anat.. Fac. de Med. Nou- 

 velle. 43 Rue des St Peres, PARIS Vie, France 



