a Fetal vascular physiology. Homo sapiens. Lepns spec, Ovis spec. (Mammalia) 



b Uterine contraction patterns. Homo sapiens (Primates) 



c Pulmonary vasculature, fetal and neonatal condition. Cavia spec. (Rodentia), Ovis spec. 



(Artiodacfyla) 

 d Architecture of umbilical blood vessels, distended and nondistended. Homo sapiens (Pri- 

 mates) 

 e Development of chemoreceptor function. Ovis spec. (Artiodactyla) 

 f Sensory input and homeostasis related to fetal adaptation to intra-uterine environment. 



Ovis spec. (Artiodactyla) 

 g Effect of psychobiological stress and ageing on fertility. Rattus rattus (Rodentia) 

 h Placentogenesis. Macaca mulafta. Homo sapiens (Primates) 

 i Placental blood flow. Macaca mulatta (Primates) 

 REYNOLDS (KING), Mrs. W. A. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. 



of Illinois, 1853 W.Polk St., CHICAGO, 111. 60612, U.S.A. 

 a Metamorphosis: uptake and localization of thyroxine in tissues and cells, histochemistry 



of adenohypophysis. collagen deposition. Rana pipiens (Anura) 

 b Fetal environment: fetal contributions to amniotic fluid, transport of insulin and cyclamate 



by hcmochorial placenta. Macaca mulatta, M. speciosa (Primates) 

 REYSS-BRION (DUCREAU), Mrs. M. Dr.es Sci. — In.st. d'Embryol. et Teratol. exper. 



du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France 

 a Influence des rayons X sur le developpement embryonnaire. Pleurodeles waltlii (Ucodela). 



Gallus spec. (Aves) 

 h Influence des rayons X sur le pouvoir inducteur de la gastrula. Pleurodeles waltlii (Urodela) 

 c Etude de I'effet des rayons X sur le developpement de la peau embryonnaire. Gallus 



domesticus (Aves) 

 REZENDE, Miss E. S. B.Sc. — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., 



Rua Carangola 288 - 4°andar, C.P. 253, BELO HORIZONTE, M.G., Brazil 

 a Study of the nuclear size and DNA content (cytophotometry) of different organs in 



embryo and larva. Ascidia nigra (Ascidiae) 

 b Study of the DNA synthesis with autoradiography and cytophotometry of endometrium, 



myometrium and placenta. Mus musculus (Rodentia) 

 REZNIK, M. M.D. — Lab. d'Anat. Pathol., Fac. de Med., Univ. de Liege, 1 rue des Bonnes- 



Villes, LIfiGE, Belgium 



(no embryological work in progress) 

 RIBBERT, D. — Zool. Inst, der Westf. Wilhelms-Univ., Badestr. 9, 44 MONSTER/Westf.. 



W.Germany 

 a Gene activation during morphogenesis in the bristle-forming cells of species possessing 



polytene chromosomes. Calliphora erythrocephala, Sarcophaga carnaria (Diptera) 

 RICE, A. L. Ph.D. — Dept. of Zool., British Museum (Nat. Hist.), Cromwell Rd. LON- 

 DON S.W.7, England 

 a Development of laboratory reared animals. Homona barbata. Dromia personata, Corystes 



cassivelaunus (Decapoda, Crustacea) 

 RICHARDS, Mrs. C. M. Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR 



Mich. 48104, U.S.A. 

 a The production of inbred strains using gynogenetic techniques of two types: 1. com- 

 bination of egg nucleus plus second polar body. 2. inhibition of the first cleavage of a 



haploid egg to produce completely homozygous diploids. Rana pipiens (Anura) 

 h A study of the genetics of various mutants including albino, blue, melanoid, as well as 



mutants uncovered by gynogenesis. Rana pipiens (Anura) 

 RICHTER, R. H. H. Ph.D. — Univ.-Frauenklinik, Schanzeneckstr. 1, BERN, Switzerland 

 RICKENBACHER, ]. Dr.med., Prof. — Anat. Inst, der Univ., Gloriastr. 19, 8006 ZURICH, 



Switzerland 

 RIECK, A. F. Ph.D.. Prof. — Dept. of Physiol., School of Med., Marquette Univ. 561 N 



15th St., MILWAUKEE, Wis. 53233, U.S.A. 

 a Studies about levels of control during early development (through early gastrula), using 



ultraviolet as a damaging agent. Echinarachnius parma (Echinoidea) 

 b Differentiation of epidermal cells under conditions of cell renewal following injury. Mus 



musculus (Rodentia) 

 RIEGERT, P. W. Ph.D. — Dept. of Biol., Univ. of Saskatchewan, Regina Campus, 



REGINA, Sask., Canada 

 RIKMENSPOEL, R. Ph.D.. Prof. — Dept. of Biol. Sci., State Univ. of New York at 



Albany, ALBANY, N.Y. 12203, U.S.A. 

 a Control mechanisms of sperm motility 

 RIMNICEANU, Mrs. C. Dr.med., Prof. — Centrul de Embriol. Norm. §i Patol., Acad. 



Republ. Social. Romania, Bul.M.Viteazul 24, TIMI^OARA, Rumania 

 a Histochemistry of the placenta. Homo sapiens (Primates) 

 RINALDI, Miss A. M. Dr.Biol. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 



90123 PALERMO, Italy 

 a Messenger RNA in unfertilized eggs. Arbacia punctulata (Echinoidea) 



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