Blood samples were collected from 162 Kuwaiti Arabs. These samples were typed for the ABO, MNSs, Rh, Kell and Duffy blood group systems, serum protein haptoglobins, the red cell isoenzymes acid phosphatase, phosphoglucomutase (locus 1), adenylate kinase, 6-phosphogluconate dehydrogenase, and the lactate and malate dehydrogenase variants. Comparisons were made with serological findings for other Arab populations in the Arabian peninsula.

Summary 1. Spectrophotometric curves were obtained for 1000 hair samples of young adult males. The sample was drawn in such a way as to constitute a random sample of England, Scotland and Wales. 2. A number of relatively simple statistical procedures were examined as methods of analysing the distribution of hair shade and hue in this sample. 3. Using these statistics, a study of broad regional differences in hair colour was made. Thanks are due to the Director of the Light Division, National Physical Laboratory, Teddington, for permission to use the Hardy Spectrophotometer, and to Prof. L. S. Penrose and Dr N. A. Barnicot for assistance in the preparation of this paper. Acknowledgements are also made to the Director of Personnel Research, War Office, for arranging for the samples to be made available

Among the Jivaro Indians of Eastern Ecuador, very low non‐taster frequencies were found, a situation in accord with most of the other, through few sets of P. T. C. data available for South American Indians. The Jivaro have maximal frequencies (1.000) of the alleles I° and D, typical of most South American Indian groups. The colour blindness frequency of males (7.1%) is seemingly higher than North American Indian figures and is similar to European frequencies. Jivaro dermatoglyphic data are in broad general agreement with data available for Amerindian groups generally, and for many Asian mongoloids, with high pattern intensity indices for males and females, mainly the result of a very high whorl incidence. The digital distribution of the pattern types for the greater part accords with the generalisations of Cummins and Midlo ('61). There are marked sex differences in the data, females having a lower mean pattern intensity index, a higher value for Dankmeijer's Index and a lower value for Furuhata's Index. Unfortunately there are few other sets of South American Indian data available for comparative purposes.

No abstract

Skin colour data from the population of Nowshahr City, northern Iran, reveal significant differences between the males and females on the upper inner arm and the forehead, and within each sex between the sites. Pigmentary variation in association with pubertal age is not found to be statistically significant. Close affinities in pigmentation with some neighbouring populations are also assessed.