The Geologigal Magazine Advertiser, 
oe TENNANT, F.GS., etc., having been 
engaged as a practical Mineralogist and Geologist during 
upwards of half a century, is about to retire from the active 
business of his profession. With this view he takes the liberty 
of inviting attention to his extensive collections of Minerals 
and Fossils, which he is now in a position to offer at greatly 
reduced prices. The Specimens are arranged in sets adapted 
to the young amateur as well as to the more advanced student, 
and it is thought that many persons might feel disposed to 
take advantage of the present opportunity, which is not likely 
to occur again, especially with respect to the large and unique 
collections, which are equally well adapted to the Gallery of 
the Nobleman or eae ae the Museums of our Public 
Schools, or the Colleges of our Colonies. 
149, Srranp, W.C., 
February, 1880. 
