48 SMITHSONIAN INSTITUTION 



National Museum's collections. These pegmatite dykes are located in 

 two rather widely separated districts surrounding Parry Sound and 

 farther east toward Bancroft. Several large and a few small specimens 

 were collected which are now in the Museum's exhibit. 



The success of the trip was due in a large measure to the hearty 

 cooperation of mining companies, quarry owners, and of the staff of 

 the Royal Ontario Museum of Mineralogy. 



