28 THE FLORA OF THE AMBOY CLAYS. 
and from similar beds in other clay pits can be preserved before they can 
be satisfactorily studied. 
The circumstances detailed above have limited the accumulation of 
material for examination, and it should also be said, that the limited appro- 
priations at the command of Professor Cook made it impossible for him to 
pay for the thorough examination of all the hundreds of clay pits which 
have been opened in the clay belt. Thus it is that the study of the Amboy 
Clay flora has progressed slowly and the greater part of the work is yet 
to be done. As the clay pits in New Jersey are destined for hundreds of 
years to be an important source of wealth to the inhabitants of the State, 
it is certain that the work of excavation will go on for a long time to come, 
and should means be provided for making the necessary collections and for 
the publication of the results of their study, we may hope and expect that 
ultimately the Amboy Clay flora will be thoroughly investigated, and the 
results of such investigation be one of the most important and interesting 
contributions to the history of vegetation on the globe. 
As the report of Mr. Lesquereux, referred to above, was the first 
contribution made to our knowledge of the Amboy Clay flora, it deserves 
some further notice. The list of plants which he gives is as follows: 
1. Pettit’s clay bank, near Washington, | South River}. 
Sterculia, undetermined species. Proteoides daphnogenoides. 
Rootlets of Equisetum. Platanus Heerii Lesq. 
Andromeda. 
2. Sayre & Fisher's clay bank, at Sayreville. 
Glyptostrobus gracillimus Lesq. Laurus species. 
Sequoia condita Lesq. Persea nebrascensis Lesq. 
Sequoia Smithsiana Heer (sic). Daphnophyllum? 
Sequoia subulata Heer. Salix protefolia Lesq. 
Araliopsis, undeterminable. Proteoides daphnogenoides Heer. 
Magnolia alternans Heer. Proteoides, undeterminable. 
Magnolia Capellinii Heer. Sterculia species. 
Cinnamomum Heerii Lesq. 
3. J. K. Bricks clay bank, Burts Creek. 
Sassafras (Araliopsis). A Sequoia with thick leaves. 
Seed of conifer. Sequoia Reichenbachi. 
Rootlets. 
