C 71 Dela 



CROMPTON, A. W. Cranial ontogenesis of Spheniscus demersus. 



II. 2b. L. 

 CZAPIK, A. Development of heart of Insects. Agelastica alni L. (Co- 

 leoptera). I. 15. D. 



CZEKANOVSKAJA, O. (data not yet received). 



DAGG, C. P. Nuclear differentiation and development. Chicken. 



(in collaboration with A. M. SCHECHTMAN) Nib. 19. L. 



DALCQ, A. M. Cytochemistry of early stages of development. Roden- 

 tia and Insectivora. 111b. 2c. c. M. 



(in collaboration with coworkers) 



Regulation in blastula and gastrula stage. Urodela and Anura. 



(in collaboration with coworkers) Ilia. lc. J. 



DALES, R. P. Breeding, larval development and ecology of Poly- 

 chaetes. Nereis diversicolor (Nereidae) , Tharyx marioni (Cirratu- 

 lidae) , Heteromastus filiformis (Capitellidae). I. 2a. C. 



DALTON, H. C. Gene action controlling development of pigmentation 

 in white and dark strains of Mexican axolotl. Siredon mexicanum. 



IIIc.3.J. 



DAM, L. van Structure of larval pharyngeo-branchial apparatus as 

 a respiratory and food-collecting organ. Xenopus laevis. I. 14. J. 



DAMAS, H. F. C. Etude du developpement des Lamproies, Lampetra 

 fluviatilis; L. planed (Cyclostomes) . I. 2a. I. 



Etude de l'influence de la lumiere sur le developpement des Ver- 



tebres inferieurs. Cyclostomes et Bvataciens. Ilia. 2a. d. LV. 



D'ANCONA, U. Differentiation of the gonads in Vertebrates. Te- 

 leosteans and other Fishes. II. 17. I. 



DANIELLI Investigations if there occur any changes in the nucleus 

 in course of differentiation. Vertebrates. Illb. 2c. V. 



DANKMEYER, J. Permeability of the placenta in rar and guinea-pig. 

 Investigation with isotopes. Illb. 3. M. 



(in collaboration with C. B. HEYN) 



Development of uterus and ovary in man. I. 17. M. 



(in collaboration with Miss A. DEKKER) 



Development of diencephalon and hypophysis in man. I. 9. M. 



(in collaboration with W. LUYENDIJK and J. W. H. BOUR) 



Investigations on congenital heartmalformations. Homo. Hid. 4. M. 



(in collaboration with H. A. SNELLEN and W. H. v. d. WEL) 



DATKOWNA, H. Osmotic pressure and fish embryos. Salmo trutta. 



Illb. 2a. b. I. 



Physico-chemical properties of embryos: the yolk. Salmo (Pisces), 



Lacetta (Reptilia) and Gallus (Aves). Illb. 2c. c. V. 



(in collaboration with Z. GRODZINSKI and K. SWIERZAWSKA) 



DAVIES, D. H. Embryology of the commoner food Fishes of South 

 Africa. I. 2a. I. 



DEKKER, Miss A. Development of uterus and ovary in man. I. 17. M. 

 (in collaboration with J. DANKMEYER) 



DELANNEY, L. E. (data not yet received). 



