This list contains the pole determinations available up to 1959 September, with the exception of some results from Russia. Further parts will appear, approximately every half year, as new determinations are made. The Russian results will be given in a future issue. The results are presented as a table with rg columns. The details given in originals has not always been sufficient to allow entries in all columns. Polar identification numbers are entered in column 2. The numbers in each part are arranged approximately according to age. It is felt that this number, prefixed by the part number, will be useful for identification purposes and in figure illustrations, and also as a key to the original. For instance, the pole determination from the Rosehill Formation has the reference number 1/117, the first number referring to Part I of the list and the second to the position within the part where a reference to the original may be found. Information about the rock unit from which the pole determination has been made is given in columns 3 and 4. Its geological age is specified by these period symbols: Quaternary Q, Tertiary T, Cretaceous K, Jurassic J, Triassic ‘R, Permian P, Carboniferous C, Devonian D, Silurian S, Ordovician 0, Cambrian e, and Pre-Cambrian pe. Subdivisions of periods from Cambrian to Cretaceous, where recognized, are denoted by u, m or 1. Epochs within the Tertiary (Palaeocene, Eocene, etc.) are denoted by Tpa, Te, To, T m and Tp. The Quaternary is divided into Recent Qr, and Pleistocene Qp. Subdivision of the Pre-Cambrian is not attempted. If it is thought that a rock formation was magnetized long after formation the probable “magnetic age” is entered in brackets after the geological age. Where possible, a distinction is made between a collecting site which is thought of as the particular place (say a quarry) from which a specimen is collected, and a collecting IocaZity which refers to a more general area (for example, a canyon section) which may comprise several sites at different levels in a rock sequence. However, the variation in sampling schemes used by different workers does not always allow this distinction to be made. The thickness of the rock unit which has been sampled is given in column 5 and in column 6 the spread of sampling localities (or sites) is indicated either as an area, or as a distance between extreme localities in those cases where the localities are few or are distributed along a zone rather than over an area. Pieces of rock, separately orientated, are referred to as samples, and from them one or more specimens are cut. The numbers of these samples and specimens are entered in columns 7 and 8. The distinction between samples and specimens has not always been made in originals, and in cases of doubt the entry is made in column 7.