Reviews and Book Notices. 249 
the Cheviot porphyrites and the Greywacké sandstone (Silurian), 
are from the Upper Boulder Clay. 
The following is a list of the boulders noticed, many, 
especially the limestones, being striated :— 
Augite syenite (Scandinavia). 
Rhomb-porphyry 4 
Quartz-porphyry ‘ 
Halleflinta = 
Hornblende gneiss (Scotland ?). 
Gneiss with large red ‘ eyes’ ,, 
White Granite 4 
Red fe % 
Porphyrite (Cheviots). 
Amygdaloidal lava (Cheviots). 
Greywacké sandstone _,, 
Basalt (Teesdale). 
Dolerite - 
Andesite (Lake District). 
Lidianstone. 
Millstone Grit (large angular block). 
Carboniferous Limestone (Teesdale). 
» Sandstone (Common). 
Micaceous i 
Quartz. 
Quartzite. 
Magnesian Limestone (Roker). 
Lias, with Gryphoea incurva, Pecten, and Saurian vertebra. 
Secondary Sandstones (Common). 
Estuarine w (Scarborough). 
Black Flints. 


3 OF 
Methods in Practical Petrology, by H. B. Milner and G. M. Part. Cam- 
bridge : W. Heffer & Sons, 68 pages, 2s. 6d. net. The sub-title is ‘ Hints 
on the Preparation and Examination of Rock Slices.’ The authors wish 
the volume to act as a companion to existing petrological textbooks, and 
have consequently omitted detailed description of rocks, minerals and 
structures. They give prominence to methodical procedure in micro- 
scopical work, and an important feature of the book is the section devoted 
to the preparation of rock slices. There is no doubt that a practical 
student will find it of value. 
The Gravels of East Anglia, by Professor T. MeKenny Hughes. The 
University Press, Cambridge, 58 pages, 1s. net. There is no doubt that 
the question of the origin of the Gravels of East Anglia is an exceedingly 
difficult one, and it requires a thorough knowledge of the various and 
numerous exposures to enable one to speak authoritatively on the matter. 
That knowledge is possessed by Dr. T. McKenny Hughes, and the present 
hand-book is of distinct service as it describes and classifies the various 
gravels, and enumerates the mammaliferous and other contents. The 
author also gives a useful summary of the subject. His diagrams illus- 
trating ‘ False Succession’ should be carefully studied by certain East 
Anglian pre-historians. 
1916 Aug. 1. 
