PREFACE. 
Cirri pedia .... 
. Prof. Gruvel. 
Myzostoma .... 
. Prof. v. Graff. 
Acari ..... 
. Dr. Trouessart. 
COLLEMBOLA .... 
. Prof. Carpenter. 
POLYCH/ETA .... 
Prof. Ehlers. 
Gephyria .... 
Mr. A. E. Shipley. 
Ch.etognatha .... 
Dr. Fowler. 
Nemertines .... 
. Prof. IIubrecht. 
Free Platyhelminthes 
. Mr. F. F. Laidlaw. 
Cestoda ..... 
Mr. A. E. Shipley. 
Nematoda .... 
Dr. v. Linstow. 
ZOANTHARIA .... 
Mr. Clubb. 
Alcyonaria and Pennatulida 
. Prof. Hickson. 
IIydromedus.e .... 
. Mr. E. T. Brown. 
Calcareous Sponges . 
Mr. Frewen Jenkin. 
PiADIOLARIA .... 
Mr. Lewis II. Gough. 
Mosses ..... 
M. Jules Cardot. 
Lichens ..... 
Mr. Darbishire. 
Alga; (Marine) .... 
Mrs. Gepp. 
Alga: (Fresh- water) . 
. Dr. Fritsch. 
Alga; (Calcareous) . 
Dr. Foslie. 
Phytoplankton .... 
. Dr. Lewis II. Gough. 
The work of securing the assistance of 
these specialists and of distributing 
the 
collections has been performed by Mr. Jeffrey 
Bell, of the Zoological Department, 
who 
has also acted as sub-editor of the Zoological and Botanical portions of the reports. 
The Keeper of Minerals, Mr. Fletcher, has superintended the reports in the subjects 
belonging to his department. 
The Director desires to acknowledge the ability and energy which have been 
brought to bear on the preparation of the Zoological reports by Mr. Jeffrey Bell. 
Owing to his care, the reports have been got ready by the various contributors and 
published within a reasonable time after the return of the ‘ Discovery ’ from the 
Antarctic Regions. Neither trouble nor expense has been spared in order to 
render the illustration and presentation of the Natural History of the Expedition 
worthy of the generous efforts both of Captain Scott and his fellow-explorers and 
of those who provided the funds for that enterprise. 
E. Ray Lank ester. 
October, 1906. 
