172 The American Geologist. March, isoo 
a part of it among the general and immense collection of fossil 
plants of the national museum of natural history according 
to genera, giving them names, which have remained unpub- 
lished ; but which may be found there and perhaps utilized 
in the future. Of course all the new species found by me in 
1849, and only named by Ad. Brongniart. have been described 
and figured since by Emmons and Fontaine. At the laboratory 
of geology, in the Jardin des Plantes, the bulk of my collection 
has been preserved together, where it fills up ten or twelve 
draws, M. R. Zeiller, professor of palseophytology at the 
School of Mines, in Paris, has lately studied my collection and 
he wrote me : 
Paris, 24 February, 1889. 
Dear Sir AND Colleague. * * * * "I have studied with great 
pleasure and interest your collection preserved in the gallery of 
geology. The assistant of M. Daubree, to whom I made an applica- 
tion, placed directly before me all the drawers containing your collec- 
tion of fossil plants of the coal basin of Richmond. But all the 
species have been described already by Rogers, Emmons or Fontaine. 
Here is the list : 
Equisetum rogersi Schimp. or Eq. arenaceum Jaeg. 
Macrotseniopteris magnifoUa Rogers. 
Acrostichides linnexfolius Bunbury. 
Acrost. rhombifolius Fontaine. 
Acrost. microphylius Fontaine var. 
Asterocarjjus virginiensis Fontaine. (Splendid specimens.) 
Ast. platyrrhochys Fontaine var'. 
Besides I have found a Pterophyllum with very narrow leaflets, allied 
to some of the figures published by Mr. Fontaine under the name 
Ctenophyllum braunianum, but certainly identical to a species of the 
Trias of Lunz, the Pterophyllum riegesi Stur. 
In studying the excellent figures of Emmons, very roughly repro- 
duced by Fontaine, I have been led to contest several of the attrib- 
utions and determinations of the latter, more especially about the 
Albertia, which Fontaine wants to make an Otozamites. The Albertia 
latifolia of Emmons is certainly an Albertia related to both Alb. latifolia 
and Alb. brauni; and until now all the Albertix ha\e been found in 
Europe in the Bunter sandstein or Lower Trias." 
Very sincerely yours, 
Rene Zeiller. 
Professor Zeiller in an excellent paper : Sur la presence, dans 
le Gres Bigarrc. des Vosges de ^'Acrostichides ehombifolius 
Fontaine. (Bulletin Soc. Geol. France, vol. xxi, p. 693, Paris, 
1888), shows that all the types of fossil plants of Richmond 
and North Carolina belong to the Trias, ranging from the 
