REPORT ON THE ROCK-SPECIMENS 
COLLECTED DURING THE 
‘ DISCOVERY ’ ANTARCTIC EXPEDITION, 1901-4. 
By G. T. Prior, M.A., D.Sc., F.G.S., 
Assistant in the Mineral Department , British Museum. 
Introductory. 
The rock-specimens brought back from the Antarctic regions by the ‘ Discovery ’ 
Expedition are listed under about 1,000 numbers. Amongst them is much transported 
material obtained from moraines, scree-slopes and soundings, but most of the specimens 
were collected in situ by Mr. Ferrar, the geologist to the Expedition. 
The specimens obtained from Cape Adare, Coulman Island, and Franklin Island 
consist of hornblende-basalts and limburgites, similar to those which were brought 
back by the ‘ Southern Cross ’ Expedition and were described in the Report relating 
thereto.* 
The following notes, therefore, refer mainly to the specimens from the Ross 
Archipelago, and from the opposite mainland which was the scene of most of Mr. 
Ferrar’s work in the field. 
For purposes of description they will be taken in the following order, which 
corresponds fairly closely with that adopted by Mr. Ferrar for the Report on the Field- 
geology : 
Chapter I. — Volcanic rocks. 
These include the eruptive rocks of the Ross Archipelago, Scott Islands, 
Auckland Islands, and Macquarie Island. 
Chapter II. — The crystalline-limestones, gneisses and granites, which form the 
basement-rocks of South Victoria Land. 
Chapter III. — The lamprophyric and other dyke-rocks, intrusive in the basement- 
rocks. 
Chapter IV. — The Beacon sandstone and other sedimentary rocks. 
Chapter V. — The dolerites intrusive in the Beacon sandstone. 
Prior, Rep. ‘ Southern Cross ’ Collections (British Museum), 1902, pp. 321-332. 
