338 Messrs. Clough, Crampton, and Flett— 
preparation, and is to be accompanied by a memoir in which the facts 
will be stated in some detail, but we propose to give a brief summar 
of the principal results with an outline of the evidence, believing that 
the conclusions are of general interest to geologists. 
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FAULTS OLD RED PELITIC SCHISTS PSAMMITIC 
SANDSTONE ETC. (SILICEGUS)SCHISTS ETC 
HITT 
HORNFELS | GRANITIC PLUTONIC BASIC PLUTONIC 
ROCKS ROCKS 
Fic. 1. Map of the Augen Gneiss District of Ross-shire. 
The relations of the chief masses of plutonic rock are indicated in 
the accompanying map (Fig. 1). It will be seen that the Inchbae 
outcrop of granite gneiss is about 53 miles long and 38 broad. 
