218 
By Exchange,— Three collections have been added by ex- 
change of specimens. One of European Jurassic and Tertiary 
plants, from the Natural History Museum of Paris, containing 
5 specimens; the others of Tertiary plants from the John Day 
Valley beds of Oregon, and Cretaceous and Tertiary plants from 
the Yellowstone National Park, from the U. S. National Mu- 
seum, consisting of 15 and 50 specimens, respectively. 
In exchange for reports on collections submitted for examina- 
tion to the curator of fossil botany the following accessions are 
to be noted : 
About 500 specimens representing the flora of certain Cre- 
taceous, Tertiary and Quaternary horizons in Maryland, from 
the Maryland ee Survey. Two reports on this material 
have been issued, viz.: ‘“ Plantae: Phanerogamia.” Md. Geol. 
, Miocene: 483- 486, jigs. Ia-1h. 1904, and “ Systematic 
Palconiclicy of the Pleistocene Deposits of Maryland: Pterido- 
phyta and Spermatophyta.” J/ézd. Pliocene and Pleistocene: 
217-237, pls. 67-75. 1906. All of the type specimens de- 
scribed and figured in these reports are included. 
About 200 specimens representing the Cretaceous flora of 
Long Island and Marthas Vineyard, from the U. S. Geolog- 
_ical Survey. These are duplicates, a number of them counter- 
parts of type specimens, forming a part of the material upon which 
et 
logical Survey, Volume L., Washington, 1906. In this instance 
the Garden could only secure the duplicates, as all type or figured 
specimens collected through the Survey are by law required to 
be deposited in the U. S. National Museum. 
About 160 specimens of Tertiary plants from Louisiana, not 
yet reported on, from the Louisiana Geological Survey. 
About 25 specimens from the Grand Gulf formation of Ala- 
bama, from the Geological Survey of Alabama. Examined 
and reported upon. 
out 20 specimens from the Laramie formation of the Bad 
ands, from the American Museum of Natural History. 
Examined and reported upon. 
