Kut 54 Langm 



KllTSKY. Mrs P. B. A.B., Ph.D. — Dept of Zool., Univ. of Calif.. BER- 

 KELEY 4. Cal.. U.S.A. (no embryological work in progress) 



KUUSI, Miss T. K. Dr Phil. — Zool. Lab., Univ. of Helsinki, Dept of 

 Physiol.. P. Rautatiekatu 13. HELSINKI. Finland 

 a. The chemical nature of specific inductive substances (isolated from liver 

 and kidney of the guinea-pig), especially the inductive effects of protein 

 and nucleic acid fractions of dead tissues. Tritunis (Urodela) 

 h. Study on the process of induction caused by granular fractions containing 

 ribonucleic acid marked with P;.o. analyzed by aid of radio-autographic 

 methods. Triturus (Urodela) 



c. The chemical nature of specific inductive substances (bone marrow of 

 the guinea-pig); role of the proteins and nucleic acids. Triturus (Urodela) 



d. The chemical nature of growth promoting substances (tissue extracts); 

 role of the proteins and nucleic acids. Mus rattus (Rodentia) 



LALLIER. R. A. Dr es Sci. — Inst, de Biol, physicochimique, 13 Rue Pierre 

 Curie, PARIS Ve, France 

 a. Li et developpement embryonnaire, etude de la biochemie des embryons 



lithines. Rana fusca, Ambystoma mexicanum (Amphibia) 

 h. Etude de I'induction. Triton taeniatus (Urodela) 



c. Insuline et developpement embryonnaire. Rana [usca (Anura) 



d. Etude de la determination. Rana fusca (Anura) , Paracentrotus lividus et 

 Arbacia punctulata (Echinodermata) 



e. Le determinisme sexuel. Bonellia viridis (Chaetopoda) 



LAMY. F. M.A. — Dept of Biol., Massachusetts Inst, of Technol.. CAM- 

 BRIDGE 39. Mass., U.S.A. (no data received over some years) 



LANDAUER, W. Ph.D., Prof. — Dept of Genet.. Coll. of Agric, Univ. 

 of Connecticut, Storrs Agric. Exper. Stat., STORRS, Conn., U.S.A. 



a. Developmental studies on various mutants, such as "duplicate", "creeper 

 chondrodystrophy" etc. Gallus domesticus (Aves) 



b. A causal analysis of teratogenic action of insulin on developing embryos. 

 Gallus domesticus (Aves) 



c. Hereditary (lethal) cyclocephaly and cyclopia. Gallus domesticus (Aves) 



d. Teratogenic action of boric acid in the embryo. Gallus domesticus (Aves) 

 LANGEVOORT. H. L. Med.Drs — Anat.-Embryol. Lab. der Rijks Univ.. 



Oostersingel 69. GRONINGEN, Holland 



a. Development of paraphysis and the circulation of the cerebrospinal fluid. 

 Gallus (Aves) 



b. Development of meninges. Gallus (Aves) 



LANGMAN, J. Dr Med. — Anat. Embryol. Lab., Free Univ., Pr. Hendrik- 

 laan 27. AMSTERDAM Z, Holland 



a. Teratogenetic effect of thyreoectomised pregnant animals on the deve- 

 loping embryo. Rattus norvegicus albinus (Rodentia) (in collaboration 

 with F. van FAASSEN) 



b. Influence of influenza-virus during pregnancy on the developing embryo. 

 Mus musculus (Rodentia) (in collaboration with R. NIEUWENHUIS) 



c. Study of abnormal development by injecting methyl-thiouracil into eggs. 

 Gallus domesticus (Aves) 



d. Joint development. Homo (Primates) 



e. Serological experiments with embryonic explanted tissues. Gallus domes- 

 ticus (Aves) 



