74) Yi PDD TINGS: 
‘“‘oranite-core”’ of the Sierra Nevada, California. “ Such a mass of 
crystalline rock having irregular or indefinite outline has received 
the name of bathylith.” This resembles the definition of stock 
given by Zirkel,* namely ‘‘stocks are irregular masses of con- 
siderable dimensions which, traversing the adjacent rocks without 
regard to their position, occur both in the stratified and massive 
terranes.” However, it seems desirable to limit stock in the 
manner already suggested. 
There is need for some general term that may be applied to 
large bodies of intruded rock whose exact character may not be 
evident, whose lateral extension may be quite irregular and whose 
depth may be profound. For such indefinite bodies the term 
bathylith may well be employed. 
JosepH P. IppINGs. 
tLoc. cit., p.544. 
