WHILE ostensibly forming a part of the scientific results of the Valdivia expedition of 1898–9, the present volume is in reality much more than this. Indeed, it represents the results of many years of work and experience of the flora of South Africa. For an account of this flora, the editor of these memoirs has been singularly fortunate in securing the cooperation of Dr. Marloth. The author has given to botanists an excellent and comprehensive survey, which for many years must form a standard reference work on the plant-geography of South Africa. The volume contains a full historical summary of the work of previous investigators and travellers, adds much that is new, and supplies a series of vivid descriptions of the peculiar vegetation of this quarter of the globe.