Cle 21 Con 



CLEAT. N. D. B.Sc. — Dept of Genet., The University, GLASGOW W. 2. 

 Scotland (U.K.) 

 a. Post-embryonic growth and development. Scheloribates laevigatas 

 (Koch) (Oribatidae. Acarina. Arachnoidea) 

 CLELAND. K. W. M.B.. B.S. — Dept of Histol. and Embryol., Univ. of 

 Sydney, SYDNEY, N.S.W.. Australia, 

 a. Carbohydrate metabolism and phosphorylation during fertilization and 



cleavage. Psammechinus miliaris. Echinus esculentus (Echinoidea) 

 h. Effect of heavy metals on fertilization and cleavage. Psammechinus 

 miliaris. Echinus esculentus (Echinoidea) 

 CLEMENT, A. C. Ph.D., Prof. — Dept of Biol., Emory University, 

 ATLANTA. Ga. U.S.A. 



a. Factors determining the cleavage pattern: experimental analysis. Ilyanassa 

 obsoleta (Gastropoda) 



b. Localization of morphogenic factors: experimental analysis. Ilyanassa 

 obsoleta (Gastropoda) 



COHN S. A. B.S.. M.S.. Ph.D. — Univ. of Tennessee, Fac. of Biol. Sci., 

 Med. Units Div.. MEMPHIS 3, Tenn., U.S.A. 



a. The development of glands of ectodermal origin. Mus musculus (Roden- 

 tia) , Gallus domesticus (Aves) 



b. Cytological. cytochemical and histochemical studies on the initiation of 

 secretory activity in developing ectodermal glands. Mus musculus 



COLLISTER, Miss R. M. Physician — Anat.-Embryol. Lab. of the Univ. of 

 Leyden. Fac. of Med.. Wassenaarseweg, Boerhaavekwartier, LEIDEN. 

 Holland. (no data received on Nov. l^S 1952) 



COLOMBO. G. DrBiol.Sci. — 1st. di Zool. e Anat. comp., Fac. di Sci., 

 Via Loredan 6, PADOVA, ItaUa. 

 a. Chromosomes in early development. (Amphibia) 

 h. Effects of hormones on cleavage and early development. (Amphibia) 



c. Caryometry in spermatogenesis. ( Arthropoda) 



COLWIN A. L. Ph.D., Prof. — Dept of Biol., Queens College, Flushing 

 67, L.I., NEW YORK. N.Y., U.S.A. 



a. Fertilization reaction. Saccoglossus (Enteropneusta) (in collaboration 

 with Mrs L. H. COLWIN) 



b. Normal and experimental development. Saccoglossus (Enteropneusta) 

 (in collaboration with Mrs L. H. COLWIN) 



c. Effect of certain chemicals on develooment. Mogula, Ciona and Styela 

 (Tunicata, Urochordata) 



COLWIN, Mrs L. HUNTER Ph.D., Prof. — Dept of Biol.. Queens Coll., 

 Flushing 67, L.I., NEW YORK, N.Y., U.S.A. 



a. Fertilization reaction. Saccoglossus (Enteropneusta) (in collaboration 

 with A. L. COLWIN) 



b. Normal and experimental development. Saccoglossus (Enteropneusta) 

 (in collaboration with A. L. COLWIN) 



c. Study of the development. Thyone (Holothuria) 



CONINCK. L. A. P. De Dr Sc, Prof. — Lab. voor Zool.. Afd. Morphol., 

 Univcrsiteitstraat 14. GENT, Belgie. 

 a. Action of alkaline growth-promoting beef anterior pituitary extract on 

 regeneration of limbs and tail, with special consideration of ribonucleic 

 acid and alkaline phosphatase. (Urodela) (in collaboration with. Fr. 

 DIERCKS and J. M. DENUCfi) 



