XXil PERCY SLADEN TRUST EXPEDITION. 
when applications for grants were first considered, it was decided to support Mr. Stanley 
Gardiner’s scheme for the exploration of the Indian Ocean; and the peculiar fitness of 
this decision will be readily acknowledged by those who remember the keen interest 
taken by Percy Sladen in all investigations of the deep-sea fauna. Besides establishing 
this as the first “Percy Sladen Trust Expedition,” the Trustees are sharing with the 
Linnean Society the expenses connected with the publication of the results. 
A second expedition, under the leadership of Dr. W. H. R. Rivers, is now studying 
Anthropology in Melanesia; while a third has been arranged, under Prof. Henry 
Harold Welch Pearson, to investigate the Botany of West Africa (with special reference 
to the structure and affinities of the Gnetaceze) during the coming winter. 
By supporting expeditions of such practical importance as these, the Trustees believe 
that they best fulfil their double function of advancing science and honouring the 
memory of their friend WALTER PERCY SLADEN. 
The Frontispiece to this volume is a reproduction, by kind permission of the Council 
of the Linnean Society, of a portrait of the late W. Percy SiapeEn, Esq., F.L.S., in the 
Society’s possession, 
