Lindv 57 Lub 



LINDVALL, S. Engineer — Wenner-Grens Inst, for exper. Biol., Norrtulls- 



gatan 16. STOCKHOLM 23. Sweden, 

 a. Studies on the proteins of unfertilized — and the first stages of fertilized 



eggs. (Echinoidea) 

 LINGBEEK, Miss C. — Hubrecht Lab.. Internat. Embryol. Inst.. Janskerk- 



hof 2. UTRECHT. Holland, 

 a. Analysis of the neural induction. Transfer of activating substances in 



horizontal direction through folds of presumptive gastrula ectoderm and 



subsequent organisation of a nervous system, (heteroplastic implantation 



of presumptive gastrula ectoderm in gastrulae and neurulae) Triturus 



taeniatus, alpestris and cristatus and Amblystoma mexicanum (Urodela) 



(in collaboration with P. D. NIEUWKOOP, Miss A. K. KREMER. 



Miss E. C. BOTERENBROOD. Miss F. F. S. N. BLOEMSMA, 



Miss L. HOESSELS, G. MEYER, F. J. VERHEYEN and J. WIL- 



LEMSEN) 

 LIPSCHUTZ. A. M.D., Prof. — Dept de Med. Exper. del Servicio Nacional 



de Salubridad, Av. Irarrazaval 849. SANTIAGO, Chile, South America. 



(no data received over this year) 

 LISON, L. — Lab. d'Anat. et d'Embr., Fac. de Med. de I'Univ., 97 Rue aux 



Laines, BRUXELLES, Belgique. 

 a. Photometric quantitative determinations of desoxyribonucleic acid 



(D.N. A.) in resting cells, mitosis, spermatogenesis and development. 



(in collaboration with J. J. PASTEELS) 

 LITTLE, C. C. Sc.D.. Prof. — Jackson Memorial Lab.. Box 558, BAR 



HARBOR, Me, U.S.A. 

 a. Studies on the form and function of ovaries which have been grafted 



into spleens of castrates and subsequently retransplanted into normal 



position within the ovarian capsule of a normal host. Offspring of these 



ovaries are examined for abnormalities which may be correlated with 



the time the graft remained in the spleen. Mus musculus (Rodentia) 



(in collaboration with Miss K. P. HUMMEL) 

 LIU J. C. B.S., Ph.D., Assoc. — Dept of Anat., School of Med., Univ. of 



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

 (no data received over this year) 

 LOMBARD, G. L. M.Sc. — Zool. Inst.. Fac. of Sci.. Univ. of Pretoria, 



PRETORIA, S. Africa. 



— Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2, UTRECHT, 



Holland. 



a. Investigations into the effects of LiCl on the early development. Xenopus 

 laeuis Daudin and Amblystoma mexicanum (Amphibia) 



b. Homoplastic transplantations of presumptive neural areas between Li- 

 thium-treated and normal blastulae/early gastrulae, respectively. Triturus, 

 Amblystoma. Pleurodeles (Urodela) 



L0VTRUP, S. Mag.scient. — Cytochem. Dept, Carlsberg Lab., 8 Gl. Carls- 

 bergvej.. COPENHAGEN Valby, Denmark. 



a. Proteolytic enzymes during development. Amblystoma mexicanum (Uro- 

 dela) 



b. Metabolism (Oo-consumption) at different temperatures. Amblystoma 

 mexicanum (Urodela) 



LUBCHENCO, L. M.D. — Univ. of Colorado, Med. Center, Dept of 

 Pediatrics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A. 



