Mounting Papers for Botanists. 
FINEST QUALITY and LOWEST PRICES. 
DRYING PAPERS and Everything used by Botanists. 
Naturalists' Agency, 
PEABODY, - MASS. 
FOREIGN EXCHANGE. 
In view of the large amount of material which we possess, we desire to 
exchange for Fossils or Minerals from America or other countries. The 
following list will show some of the material we have. 
Gr6s de May (Calvados). Silurien moyen. 
Gr6s a bilobites. Silurien moyen. 
Conchylien (Trias). 
Lias moyen de Subles et de la Caine (Calvados), 50 especes. 
Toarcien de la Lo/ere, 50 especes. 
Bajocien de Bayeux, 100 especes. 
Bathonien de Luc, Laugrune, 60 especes. 
Callovien des 2 Sevres et de la Seine Inferieure. 
Oxfordien de Villers et de Neuvisy. 
Portlandien de la Meuse (Calcaire du Barrois). 
Aptien d'Apt. 
Albien de Bellegard et de 1'Aube, 100 especes. 
Cenomanien de Bryollay. 
Turonien divers. 
Senonien divers. 
Garumnien de la Haute Garonne. 
Eocene complet du Bassin de Paris, 1000 especes. 
Miocene de la Touraine and du Bordelais, 200 especes. 
Pliocene de la Vallce du Rhone . 
We shall send only first-class specimens, and require the same in exchange. 
A*!, ALEXANDRE STUER, 
40, Rue des Mathurins, Paris, France. 
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