^{page 98 note 1} A general account of the Expedition's work has been published by Worthington, E. B. in the Geographical Journal, lxxix, 1932, 275–97, and most of the biological results have appeared as a series of papers in the Linnaean Society's Journal, Zoology, xxxviii, 99–362.CrossRefGoogle Scholar

^{page 99 note 1} There can be little doubt that in the future this correlation will be possible.

^{page 100 note 1} The Rift Valleys and Geol. of E.A., p. 114.Google Scholar

^{page 100 note 2} Fossils of this date have been known to occur in the Omo Valley for many years. In 1932 Dr. Arambourg, of Paris, collected a large mammalian fauna which is now being worked out.

^{page 100 note 3} Observed forming the west wall of the rift valley as far south as Suswa Volcano, and these deposits must continue for some distance to the south.

^{page 101 note 1} The age of the base of Longonot is problematical and may be post-Kamasian.

^{page 102 note 1} Dr. Leakey, L. S. B., The Stone Age Cultures of Kenya Colony, Appendix A.Google Scholar

^{page 102 note 2} Professor Gregory, J. W., The Rift Valleys and Geology of E.A., p. 107.Google Scholar

^{page 103 note 1} Gregory, J. W., The Rift Valleys and Geology of E.A., p. 108.Google Scholar

^{page 104 note 1} Leakey, L. S. B., Stone Age Cultures of Kenya Colony, Appendix A.Google Scholar

^{page 105 note 1} At two points it appeared that sedimentary beds occurred amongst the volcanic series, but if this were the case they were so disturbed and altered by the volcanic activity as to be unrecognizable.

^{page 106 note 1} The exact relation of the sandy material from which the bone was obtained to the rocks forming the hill and the scree of columnar basalt fragments was, at the time, impossible to determine.

^{page 108 note 1} Major Athill, L. F., Geogr. Journ., 1920, p. 365.Google Scholar

^{page 109 note 1} A map of the island by S. Worthington appeared in Quart. Journ. Geol. Soc., lxxix.Google Scholar