Shaver 81 Sing 



c. Biochemistry of development of frog embryos. Rana fusca (Anura) 



d. Biochemical and histological characterisation of effects of cytoplasmic 

 granules on growth of host cells of chorio-allantoic membranes of chick. 

 Gallus domesticus (Aves) 



e. Cytochemical analysis of activating nature of cytoplasmic granules in 

 artificial parthenogenesis of frog eggs. Rana pipiens (Amphibia) 



f. Immunological studies of specific reactions of cytoplasmic granules with 

 host cells (chorio-allantoic membranes). Gallus domesticus (Aves) 



SHELLHAMER, R. H. B.A., M.A., Prof. — Dept of Anat.. Ohio State 



Univ., COLUMBUS 10, Ohio, U.S.A. 



(no data received over this year) 

 SHEN, S. C. Ph.D. — Osborn Zool. Lab., Yale Univ., NEW HAVEN 11, 



Conn., U.S.A. 



a. The dissociation of morphological and biochemical development in the 

 central nervous system of Ambly stoma punctatum. (Amphibia) (in col- 

 laboration with E. J. BOELL) 



b. A comparative study of the development of cholinesterase, succinic 

 dehydrogenase, and respiratory activity in the central nervous system 

 of Ambly stoma punctatum. (Amphibia) (in collaboration with E. J. 

 BOELL) 



c. Development of respiratory enzymes in rat muscle. (Mammals) (in col- 

 laboration with E. J. BOELL) 



SHULOW, A. Dr — Dept of Zool., Hebrew Univ., JERUSALEM, Israel, 

 a. Ecological conditions of development of the eggs. Artificially induced 

 interruption of development (eggs) "diapause". (The changes in yearly 

 development cycles under influence of dryness.) Schistocerca gregaria, 

 Tmethis cisti, Anacridium aegyptium, Pareuprepocnemis syriaca and 

 Pezatettix judaica (Ovthoptera, Insecta) 



SIGOT, A. — Inst, de Zool., Lab. de Biol, gener., Fac. des Sci. de Stras- 

 bourg, 12, Rue de l'Universite, STRASBOURG, France, 

 a. Etude de la sensibilite hereditaire au gaz carbonique chez Drosophila 

 melanogastet. (Insecta) 



SILBERBAUER, Mrs B. I. B.Sc. — Dept of Zool., Univ. of Cape Town, 

 RONDEBOSCH, South Africa, 

 a. Structure and development of Cape Crawfish, Jasus Lalandii. (Deca- 

 poda) 



SINCLAIR, J. G. B.S., M.S., Ph.D., Prof. — Dept of Anat., Med. Branch, 

 Univ. of Texas, GALVESTON, Tex., U.S.A. 



a. Early human embryos, structure, conditions of implantation. (Mam- 

 malia) 



b. Placental measurement, blood cell distribution and other observations 

 related to birth. Special attention to twinning. Human fetus (Mammalia) 



c. Effects of urethane on reproduction and on the young across the placenta. 

 Mice C57 and CBA. (Mammalia) 



SINGER, Miss J. B.A. — Dept of Zool., Univ. of Bristol, BRISTOL, 



England, 

 a. The induction of regeneration in the hydroid, Cordylophora lacustris. 

 SINGER, M. A.M., Ph.D., Prof. — Dept of Anat., Harvard Med. School, 



25, Shattuck Str., BOSTON 15, Mass., U.S.A. 



a. Influence of nerves on regeneration of urodele limb. Triturus viridescens 



b. Histology of limb and nerve regeneration in urodele. Triturus viridescens 



