216 
“Descriptions of Fossil Plants from the Chinese Coal-bearing 
Rocks, etc.” Smithsonian Cont. 15: 119-123, pf. 9. 1867. 
“Descriptions of Some Peculiar Screw-like Fossils from the 
Chemung Rocks.” Ann. N. Y, Acad. Sci. 3: 217-220, pi. 78. 
1885. 
“Fossil Fishes and Fossil Plants of the Triassic Rocks of New 
Jersey and the Connecticut Valley.” Monog. U. S. Geol. Surv. 
14. Washington, 1888. 
“ Rhaetic Plants from Honduras.” Amer. Jour. Sci. 36: 342 
—351, pl. & 
“ Devonian Plants from Ohio.” Jour. Cincinnati Soc. Nat. Hist. 
12: 48-57, 104, 105, pls. 4-6. 
“ The Flora of the Great Falls Coal Field, Montana.” Amer. 
Jour. Sci. 41: 191-201, pl. rg, 1891. 
A few specimens only are lacking in the above-mentioned col- 
lections, and these may possibly be found among the unassorted 
specimens when these are subjected to final careful scrutiny. 
Among the miscellaneous material may be specially noted the 
extensive collection made in Australia in 1838-42, by the 
Wilkes Exploring Expedition, containing the type specimens de- 
scribed by Dana in volume 10, Appendix to the Report on the 
Expedition ; two collections of Upper Devonian plants from the 
celebrated ‘‘ Fern Ledges’”’ of New Brunswick, made and identi- 
fied by C. F. Hartt ; a suite of specimens from the Tertiary sand- 
stone of Bridgeton, N. J., mostly collected by the late Dr. John 
I. Northrop, which have been made the subject of a forthcoming 
Bulletin of the U. S. Geological Survey, by the writer, and numer- 
ous lesser collections upon which more or less well-known con- 
tributions have been based. Among these latter may be noted 
the following : 
“The Potomac or Younger Mesozoic Flora.”” Wm. M. Fon- 
taine. Monog. U.S. Geol. Surv. 15. Washington, 1889. (A 
small number only of the specimens described 
“Note on a Collection of Tertiary Fossil Plants from Potosi, 
Bolivia.” N. L. Britton. Trans. Amer. Inst. Min. 
250-259, t#lust. 1893. (Collection complete.) 
“ Preliminary Contribution to Our Knowledge of the Cretace- 
