200 J. H. A. Whealler—Boulders of Cambridge Gravels. 
(2) The Paniselian is sometimes regarded as having been formed 
in deeper water than the Bruxellian. 
(3) Recent study of the fauna seems to show that the fossiliferous 
horizon in the Flanders Clay at Bailleu, Ploegsteert (near Messines), 
etc., marks the base of the Lutetian] (Paniselian facies), and that 
the Belgian geologists have been correct in régarding the series of 
sandy clays in the higher part of the ‘‘Argile des Flandres” as 
Paniselian. 
The Boulders of the Travellers’ Rest Gravel Pit, 
Cambridége. 
By J. EK. A. WHEAttER, Christ’s College, Cambridge. 
Neon twelve years ago Dr. R. H. Rastall and Mr. J. Romanes 
published an account of the Boulders of the Cambridge Drift.t 
In this paper a list was given of the rock-types recognized at that 
time in the gravels of the Travellers’ Rest Pit, situated about a 
mile north-west of the town of Cambridge on the Huntingdon Road. 
Since that time Professor Marr has paid much attention to this 
pit, among others, with special reference to the Paleolithic 
implements there found. He has embodied his results in two 
important papers.?. In the course of this work Professor Marr 
collected a number of interesting erratics, and the same pit has also 
been investigated by many geologists connected with the University, 
both members of the Sedgwick Club and others. During the last 
ten years, though the North Pit has been abandoned, the South Pit 
has been very actively worked for gravel, and has been greatly 
increased in size. In consequence of this a large amount of additional 
material has been collected, including many new types, while some 
of the older specimens, whose origin had been left indeterminate 
by Rastalland Romanes, have been now identified. Hence it is felt 
that the time has now arrived when these more recent results should 
be put on record. 
The Travellers’ Rest Pit is excavated in the “‘Gravels of the Ancient 
River System ”’ of the earlier literature. It is not proposed here to 
discuss its stratigraphical relations. On this point reference may be 
made to Professor Marr’s recent publications, especially to the 
Q.J.G.S. paper, in which a sketch is given of the “‘ face” of the pit. 
It is intended in this paper only to deal with the erratics found in 
the gravels. 
The list given by Rastall and Romanes in their paper is as 
follows :— 
Carboniferous Limestone, several, some striated. 
Millstone Grit, several. 
Basalts 
Dolerites 
1 Quart. Journ. Geol. Soc., vol. lxv, 1909, p. 246, et seq. 
2 Quart. Journ. Geol. Soc., , vol. Ixxv, 1919, p. 204, et seq. ; and Proc. Camb. 
Phil. Soc., vol. xix, 1917, p. "64, 
\iange and unusually well rounded. 
ms te 
