Correspondents include: Dr M K Tadjudin; Yoshio Tajima (also Y Ohta); Dr Kiichi Takano; Prof Josef Tal; Violet K Tallent; C C Tan; Katumi Tanaka; E L Tanner, Secretary, University College London; Dr Katharine Tansley; Prof A O Tantawy, Egyptian Journal of Genetics and Cytology; "Tat"; Dr Nyan Taw (and Dr Sann Aung); Prof M S Thacker; Dr M Thangavelu; Prof Karl Theiler; Dr Max Theiler; Therapeutic Research Corporation of Great Britain, Dr S W Underhill; Lorna W Thigpen (Lorna Thigpen David); Prof John M Thoday; Dr P K Thomas; A Landsborough Thomson; H G Thornton; R H Thorp; Thule International Symposia, Arthur Engel; The Times, John Skinner, Michael Wolfers; N W Timoeff-Ressovsky; Prof G Tondury; Dr K Torley; Dr M Tost; M K Totton; Geoffrey H Tovey; Daphne G Trasler; Charles A H Trench; Monica J Trigg; Dr Mason Trowbridge jr; Dr Gillian M Truslove; Dr P Tschumi; A Tuck and Son, The Mousery; Mrs Susan Dale Tunnicliffe; Prof Ruth Turner