Ten years ago a symposium on Cytotaxonomy 'was held in London (Proc. Linn. Soc. Lond. 169:110, 1958) in which a first attempt was made to bring together various disciplines to discuss advances of mammalian cytogenetics and to put them into proper context with the sciences of evolution and taxonomy. The introductory remarks by V. B. Turrill to that symposium, essentially an admonishment to be tolerant of the short comings of our respective disciplines, would be a most appropriate begin ning to this conference as, 'ell. However, the meeting held at Hanover was conceived more along the lines of...