Lun 57 Macm 



LUNDBORG, H. A. — Embryol. Dept, Histol. Inst., Karolinska Inst., Sol- 



navagen 1, STOCKHOLM 60, Sweden. 



(no data received on Nov. 1^', 1952) 

 LUSCHER, M. DrPhil. (Basel) — Zool. Anstalt. Univ. Basel, BASEL. 



Schweiz (and Swiss Tropical Inst., BASEL, Schweiz) 

 a. Differentiation of castes in termites, especially the determination of sup- 

 plementary reproductives in primitive termites. Kalotermes flavicollis 



(Fabr.) (Isoptera, Hexapoda) 

 h. Descriptive and experimental study of the glands producing moulting + 



metamorphosis hormones. Zootermopsis nevadensis (Hagen) (Isoptera, 



Hexapoda) 

 LUTHER, W. Dr Phil.. Prof. — Zool. Inst, der Univ.. MARBURG, 



Deutschland (no data received over some years) 



LUTZ H. DresSci. — Lab. de Zool.. Fac. des Sci., 1 Avenue Vercinge- 



torix, CLERMONT-FERRAND, France, 

 a. Developpement du blastoderme pendant les premieres heures de I'incu- 



bation. Anas (Aves) 

 h. La polyembryonie experimentale; I'orientation des embryons. (Aves) 

 c. Polvembryonie experimentale. Salmonidae (Teleostei) (en collaboration 



avec Mrs LUTZ— OSTERTAG) 

 LUTZ— OSTERTAG, Mrs Y. Lic.es Sci — Lab. de Zool., Fac. des Sci.. 



1 Avenue Vercingetorix. CLERMONT-FERRAND. France. 



— Lab. de Zool. de la Fac. des Sci. et Lab. d'Embryol. et Teratol. exper. 



du C.N.R.S., Inst, de Zool. et de Biol, gen., 12 Rue de I'Universie. 



STRASBOURG. France. 



a. La genese de Tasymmetrie du tractus genital et la regression des canaux 

 de Miiller par la methode d'explantations. Gallus (Aves) 



b. Role des hormones dans la differenciation primaire du sexe. Gallus 

 (Aves) (en collaboration avec Et. WOLFF) 



c. Polyembryonie experimentale. Salmonidae (Teleostei) (en collaboration 

 avec H. LUTZ) 



LYESEN, A. H — Zool. Lab. der Rijks Univ.. Janskerkhof 3, UTRECHT. 

 Holland, 

 a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in collabo- 

 ration w^th D. BOSSCHAERT, Miss C. H. M. BRAAT, Miss S. C. A. 

 HAIJE. J. H. W. NICOLAI, Miss A. J. PARIS, Chr. P. RAVEN. F. 

 van RIJCKEVORSEL and Miss L. G. de VRIES) 

 LYON, Miss M. F. Ph.D. — Med. Res.Council, Inst, of Anim. Genet., King's 

 Buildings. West Mains Rd. EDINBURGH 9, Scotland (U.K.) 

 a. Developmental study of absence of otoliths. Mus musculus (Rodentia) 

 h. Developmental study of the zigzag mutant. Mus musculus (Rodentia) 

 MACKENZIE, }. Ph.D. — Dept of Pediatrics, Med. School, Univ. of Colo- 

 rado, 4200 East Ninth Ave, DENVER 7, Col., U.S.A. 

 a. Study of developmental disturbances related to nutritional deficiencies 

 investigated by application of anti-vitamins and anti-animo acids to the 

 intact egg and to explants (somites). (Aves) (in collaboration with H. 

 HERRMANN, L. LUBCHENKO and U. ROTHFELS) 

 MACMILLAN, E. W. Dr. — Dept of Anat., Univ. of Liverpool, LIVER- 

 POOL. England (U.K.) 

 a. The importance of the epididymis and its vascularization for spermato- 

 genesis. (Mammalia) (in collaboration with R. G. HARRISON) 



