Hubl 47 Ich 



c. Weitere Untersuchungen iiber die Beziehungen zwischen Nervensystem 



und Regeneration. (Lumbricidae, Oligochaeta) 

 HUBLfi, J. Lie. Zool. — Afd. Morphol., Lab. voor Zool., Universiteitstr. 14, 



GENT, Belgie 



(no data received over some years) 

 HUGOSSON. R. Med.kand. — Tornblad-Inst. of comp. Embryo!., Biskops- 



gatan 7, LUND, Sweden 



(no data received on Nov. 1^', 1953) 

 HULTIN, J. M. T. Fil.lic. — Wenner-Grens Inst, for experimental Biology, 



Norrtullsgatan 16, STOCKHOLM Va., Sweden 



(no data received on Nov. 1^', 1953) 

 HUMPHREY, R. R. F.LI.E., A.M., Ph.D., Prof. — Dept of Anat., School 



of Med., Univ. of Buffalo, 3435 Main St, BUFFALO 14, N.Y., U.S.A. 



a. Studies on spontaneous haploidy and polyploidy. Ambystoma mexicanum 

 (Urodela) (in collaboration with G. FANKHAUSER) 



b. The offspring of polyploids; their chromosome number, mortality, patho- 

 logy etc. Ambystoma mexicanum (Urodela) (in collaboration with G. 

 FANKHAUSER) 



c. Matings especially of dark 2n x white 2n to obtain haploids (white) 

 to determine whether they are androgenetic or gynogenetic. Ambystoma 

 mexicanum (Urodela) 



d. Triploid, tetraploid and other heteroploid females are mated with 2n 

 males, and the offspring studied. Ambystoma mexicanum (Urodela) 



e. Genetic factors in metamorphosis. Ambystoma mexicanum (Urodela) 



f. Modification of a lethal trait by the genotype of the mother. Ambystoma 

 mexicanum (Urodela) 



g. Modification in a lethal trait permitting survival of homozygotes which 

 commonly die. Ambystoma mexicanum (Urodela) 



HUMPHREY, Miss T. M.D., Ph.D. — Dept of Anat.. School of Med., 



Univ. of Pittsburgh. PITTSBURGH 13. Pa. U.S.A. 

 a. Further studies on the descending root fibers of the trigeminal nerve in 



embryos during 7.5 to 8.5 weeks age period. Morphological study based 



on serially sectioned, pyridine silver impregnated embryos. Correlation 



of the anatomical findings on embryos with neurological observations 



and neurosurgical procedures. Homo (Primates) 

 h. Pancreatic developmental studies. Homo (Primates) 

 c. Diplomyelia in embryos: cases with one spinal cord located dorsal to 



the other. Homo (Primates) 

 HUNT, E. L. Ph.D., Prof. — Dept of Biol.. Emory Univ., ATLANTA. 



Ga, U.S.A. 



a. Studies on the distribution of certain radio-isotopes in the embryo. Gallus 

 (Aves) 



b. Studies on the distribution of radio-iodine. (Amphibia) 



HYLBOM, J. R. Fil.mag. — Zootom. Inst., Univ. of Stockholm, 116 Drott- 



ninggatan, STOCKHOLM, Sweden 

 a. Development of larvae including metamorphosis. Philidium (Nemertini, 



Plathelminthes) 

 ICHIKAWA. A. Rigakushi (M.S.). Rigakuhakushi (Dr). Prof. — Zool. 



Inst., Fac. of Sci., Hokkaido Univ., North 8, West 5, SAPPORO, Japan 



(no data received on Nov. 1=', 1953) 



