a. Recherches sur les transformations qui se produisent dans les organis- 

 mes et dans les tissus cultjves in vitro pendant I'accroissement. 

 (Amniota) 



b. Recherches sur les caracteres de la structure et des proprietes biologi- 

 ques dans les tissus cultives in vitro. (Amniota) 



LEVI-MONTALCINI, Miss R. M.D. — Dept of Zool., Washington Univ., 



Lindell and Skinker Av.. ST LOUIS 5. Mo.. U.S.A. 

 a. Neuro-embryology. Gallus domesticas (Aves) 



h. Effects of mouse sarcoma on nerve growth in vivo and in vitro. 

 LEWIS, W. H. F.I.I.E., Dr, ProL (Emer.) — Wistar Inst, of Anat. and 



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

 LILLIE, R. S. Ph.D., Sc.D. — Physiol. Lab., Univ. of Chicago, CHICAGO 



37, 111., U.S.A. 

 LIMBORGH, J. van Med.Drs. — Anat.-Embryol. Lab. der Rijks Univ., 



Janskerkhof 3, UTRECHT, Holland 



a. Origin of the asymmetry of the gonads. Anas boschas (Aves) 



b. Sex differentiation. Anas boschas (Aves) 



LINDBERG, N. O. H. Phil.Dr — Wenner-Grens Inst, for experim. Biol., 



Norrtullsgatan 16, STOCKHOLM Va., Sweden 

 LINDAHL, P. E. F.I.I.E., Fil.Dr. Prof. — Inst, for Zoophysiol., Uppsala 



Univ., UPPSALA. Sweden 



a. Large scale separation of macromeres, mesomeres and micromeres of the 

 developing egg. (Echinoidea) 



b. The physiology of ripening in spermatozoa. (Mammalia) (in collabora- 

 tion with J. E. KIHLSTROM) 



c. The mechanism of agglutination of spermatozoa. (Mammalia) (in colla- 

 boration with J. E. KIHLSTROM and Miss A. E. A. NILSSON) 



d. The primary sex rate. (Mammalia) (in collaboration with Mrs. G. 

 SUNDELL) 



LINDH, N. O. Fil.Lic. — Zoophysiol. Inst., Univ. of Lund, LUND, Sweden 



a. Nucleic acid gradients and metabolism during regeneration. Euplanaria 

 polychroa (Tutbellaria) 



b. Mitotic gradients during regeneration. Euplanaria polychroa (Turbel- 

 laria) 



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

 Nacional de Salubridad. Av. Irarrazaval 849, SANTIAGO, Chile. S. 

 America 



LISON, L. Prof. — Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, 

 SAO PAULO, Bresil 



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

 HARBOR, Me, U.S.A. 



LIU, C. N. B.S., Ph.D. — Dept of Anat, School of Med., Univ. of Penn- 

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



a. Restoration of the intrinsic neurons following damage. 



b. Fate of cells of Clarke's nucleus following axon section. Felis domestica 



c. Intraspinal sprouting elicited from intact spinal sensory neurons by 

 adjacent posterior root section, (in collaboration with W. W. CHAM- 

 BERS) 



LODDER, Miss F. J. B.Sc. — Zool. Lab. der Rijks Univ.. Janskerkhof 3, 

 UTRECHT, Holland 



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