a. Use of enzymes in disaggregation studies. Dictyostelium spp., Polysphon- 

 dylium spp. (Acrasiales) 

 WHITING, H. P. M.A., Ph.D. — Dept. of Zool., Univ. of Bristol, BRISTOL 

 8, England 

 a. Development of the nervous system and behaviour pattern. Scylliorhinus 

 canicula, Petromyzon fluviatilis, Salmo spp. (Pisces) (in collaboration 

 with J. E.HARRIS) 

 WHITTAKER, J. R. B.A., M.Sc, Ph.D. — Dept. of Zool., Univ. of Califor- 

 nia, LOS ANGELES 24, Calif., U.S.A 



a. Dedifferentiate and metaplasia of embryonic eye tissues cultured i n 

 vitro. Gallus domesticus (Aves) 



b. Biochemical aspects of neural development and melanogenesis during 

 larval development. Ciona intestinalis, Styela spec. (Ascidiae) 



WIDERSTEN, B. Fil.mag. — Zool. Inst., Univ. of Uppsala, UPPSALA, 

 Sweden 

 a. Larval development. (Scyphozoa) 



WIERTZ (HOESSELS), Mrs. E. L. M. J. Ph.D. — Veter. Anat. and Em- 

 bryol. Inst., State Univ. of Utrecht, Bekkerstr. HI, UTRECHT, Nether- 

 lands 



a. Photographical series of normal development. Gallus domesticus (Aves) 



b. Photographical series of organ development. Domestic animals (Mamma- 

 lia) 



c. Histochemical determinations in embryos. Domestic animals {Mam- 

 malia) 



WIGGLESWORTH, V. B. Dr., F.I.I.E., Prof. — Dept. of Zool., Univ. of 

 Cambridge, Downing Street, CAMBRIDGE, England 

 (no embryological work in progress) 



WILD, A. E. B.Sc.Hons. M/C. — Agricultural Research Council Unit of 

 Embryol., Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caer- 

 narvonshire, Wales 

 a. Protein composition of the maternal and foetal fluids at different stages 

 of pregnancy. Oryctolagus cuniculus (Lagomorpha) 



WILDE, C. E., Jr. A.B., M.A., Ph.D., M.I.I.E., Prof. — Dept. of Histol. & 

 Embryol., School of Dentistry, Univ. of Pennsylvania, 4001 Spruce Street, 

 PHILADELPHIA 4, Pa., U.S.A. 



a. Organogenesis in vitro (limb bud, gills, cranial neural crest). (Am- 

 bystoma maculatum (Urodela) 



b. Cellular differentiation (pigment cell; ectomesenchyme). Amby stoma ma- 

 culatum (Urodela) 



1 . causal biochemistry of cellular differentiation. 



2. differentiation of cytoplasmic fragments. 



c. Morphology and causal biochemistry of striated muscle differentiation. 

 Ambystoma maculatum (Urodela) 



d. Electrophoresis of molecular constituents of specific embryonic anlagen 

 and cell types. Fraction recovery and tissue culture of embryonic cells 

 in the presence of selected fractions. Ambystoma maculatum (Urodela) 



e. Cytochimeras in tissue culture from disaggregated cells of embryos of 

 different classes. Gallus spec. (Aves), Mus spec. (Rodentia) 



f. Role of probablistic processes in cellular differentiation. Gallus spec. 

 (Aves), Mus spec. (Rodentia) 



177 



